Chapter 9 : The effect of light on Meadowfoam flowering
Raw data Listing

Obs FLOWERS TIME INTENSity Time0 TimeName
1 62.3000 1 150 0 Late
2 77.4000 1 150 0 Late
3 55.3000 1 300 0 Late
4 54.2000 1 300 0 Late
5 49.6000 1 450 0 Late
6 61.9000 1 450 0 Late
7 39.4000 1 600 0 Late
8 45.7000 1 600 0 Late
9 31.3000 1 750 0 Late
10 44.9000 1 750 0 Late
11 36.8000 1 900 0 Late
12 41.9000 1 900 0 Late
13 77.8000 2 150 1 Early
14 75.6000 2 150 1 Early
15 69.1000 2 300 1 Early
16 78.0000 2 300 1 Early
17 57.0000 2 450 1 Early
18 71.1000 2 450 1 Early
19 62.9000 2 600 1 Early
20 52.2000 2 600 1 Early
21 60.3000 2 750 1 Early
22 45.6000 2 750 1 Early
23 52.6000 2 900 1 Early
24 44.4000 2 900 1 Early


Chapter 9 : The effect of light on Meadowfoam flowering
Plot of the raw data

                           Plot of FLOWERS*INTENSity.  Symbol is value of TimeName.                            
                                                                                                               
      FLOWERS |                                                                                                
              |                                                                                                
           80 +                                                                                                
              |  E                E                                                                            
              |  L                                                                                             
              |  E                                                                                             
              |                                                                                                
              |                                    E                                                           
           70 +                                                                                                
              |                   E                                                                            
              |                                                                                                
              |                                                                                                
              |                                                     E                                          
              |  L                                 L                                                           
           60 +                                                                      E                         
              |                                                                                                
              |                                    E                                                           
              |                   L                                                                            
              |                                                                                       E        
              |                                                     E                                          
           50 +                                    L                                                           
              |                                                                                                
              |                                                                                                
              |                                                     L                L                E        
              |                                                                                                
              |                                                                                       L        
           40 +                                                     L                                          
              |                                                                                                
              |                                                                                       L        
              |                                                                                                
              |                                                                                                
              |                                                                      L                         
           30 +                                                                                                
              |                                                                                                
              ---+----------------+----------------+----------------+----------------+----------------+--      
                150              300              450              600              750              900       
                                                                                                               
                                                       INTENSity                                               
                                                                                                               
NOTE: 2 obs hidden.                                                                                            


Chapter 9 : The effect of light on Meadowfoam flowering
Initial fit of the raw data to TIME

The REG Procedure
Model: MODEL1
Dependent Variable: FLOWERS

Number of Observations Read 24
Number of Observations Used 24

Analysis of Variance
Source DF Sum of
Squares
Mean
Square
F Value Pr > F
Model 1 886.95034 886.95034 5.65 0.0265
Error 22 3450.98592 156.86300    
Corrected Total 23 4337.93627      

Root MSE 12.52450 R-Square 0.2045
Dependent Mean 56.13750 Adj R-Sq 0.1683
Coeff Var 22.31039    

Parameter Estimates
Variable DF Parameter
Estimate
Standard
Error
t Value Pr > |t|
Intercept 1 37.90000 8.08453 4.69 0.0001
TIME 1 12.15833 5.11310 2.38 0.0265


Chapter 9 : The effect of light on Meadowfoam flowering
Initial fit of the raw data to INTENSITY

The REG Procedure
Model: MODEL1
Dependent Variable: FLOWERS

Number of Observations Read 24
Number of Observations Used 24

Analysis of Variance
Source DF Sum of
Squares
Mean
Square
F Value Pr > F
Model 1 2579.75004 2579.75004 32.28 <.0001
Error 22 1758.18622 79.91756    
Corrected Total 23 4337.93627      

Root MSE 8.93966 R-Square 0.5947
Dependent Mean 56.13750 Adj R-Sq 0.5763
Coeff Var 15.92458    

Parameter Estimates
Variable DF Parameter
Estimate
Standard
Error
t Value Pr > |t|
Intercept 1 77.38500 4.16119 18.60 <.0001
INTENSity 1 -0.04047 0.00712 -5.68 <.0001


Chapter 9 : The effect of light on Meadowfoam flowering
Plot of the raw data

                            Plot of resid*INTENSity.  Symbol is value of TimeName.                             
                                                                                                               
       resid |                                                                                                 
             |                                                                                                 
          15 +                                                                                                 
             |                                                                                                 
             |                   E                                                  E                          
             |                                    E                                                  E         
             |                                                                                                 
          10 +                                                     E                                           
             |                                                                                                 
             |                                                                                                 
             |                                                                                                 
             |  L                                                                                              
           5 +                                                                                                 
             |  E                E                                                                             
             |                                    L                                                  E         
             |                                                                                                 
             |                                                                                       L         
           0 +                                                                                                 
             |                                                     E                E                          
             |                                    E                                 L                          
             |                                                                                                 
             |                                                                                       L         
          -5 +                                                                                                 
             |                                                                                                 
             |                                                     L                                           
             |                                                                                                 
             |  L                                                                                              
         -10 +                   L                L                                                            
             |                   L                                                                             
             |                                                                                                 
             |                                                                                                 
             |                                                     L                                           
         -15 +                                                                                                 
             |                                                                      L                          
             |                                                                                                 
             |                                                                                                 
             |                                                                                                 
         -20 +                                                                                                 
             |                                                                                                 
             ---+----------------+----------------+----------------+----------------+----------------+--       
               150              300              450              600              750              900        
                                                                                                               
                                                      INTENSity                                                
                                                                                                               
NOTE: 1 obs hidden.                                                                                            


Chapter 9 : The effect of light on Meadowfoam flowering
Multiple regression

The REG Procedure
Model: MODEL1
Dependent Variable: FLOWERS

Number of Observations Read 24
Number of Observations Used 24

Analysis of Variance
Source DF Sum of
Squares
Mean
Square
F Value Pr > F
Model 2 3466.70039 1733.35019 41.78 <.0001
Error 21 871.23588 41.48742    
Corrected Total 23 4337.93627      

Root MSE 6.44107 R-Square 0.7992
Dependent Mean 56.13750 Adj R-Sq 0.7800
Coeff Var 11.47374    

Parameter Estimates
Variable DF Parameter
Estimate
Standard
Error
t Value Pr > |t|
Intercept 1 59.14750 4.95447 11.94 <.0001
INTENSity 1 -0.04047 0.00513 -7.89 <.0001
TIME 1 12.15833 2.62956 4.62 0.0001


Chapter 9 : The effect of light on Meadowfoam flowering
Multiple regression
Plot of residuals

                            Plot of resid*INTENSity.  Symbol is value of TimeName.                             
                                                                                                               
       resid |                                                                                                 
          15 +                                                                                                 
             |                                                                                                 
             |                                                                                                 
             |  L                                                                                              
             |                                                                                                 
             |                                                                                                 
          10 +                                                                                                 
             |                                    L                                                            
             |                                                                                                 
             |                                                                      E                          
             |                   E                                                                   L         
             |                                    E                                                  E         
           5 +                                                                                                 
             |                                                                      L                          
             |                                                     E                                           
             |                                                                                                 
             |                                                                                       L         
             |                                                                                                 
           0 +--E---------------------------------------------------------------------------------------       
             |                                                                                                 
             |  E                                                  L                                           
             |                   E                                                                   E         
             |  L                                 L                                                            
             |                   L                                                                             
          -5 +                   L                                                                             
             |                                                                                                 
             |                                                     E                                           
             |                                                     L                E                          
             |                                    E                                                            
             |                                                                                                 
         -10 +                                                                      L                          
             |                                                                                                 
             ---+----------------+----------------+----------------+----------------+----------------+--       
               150              300              450              600              750              900        
                                                                                                               
                                                      INTENSity                                                


Chapter 9 : The effect of light on Meadowfoam flowering
Multiple regression
Plot of residuals

                                 Plot of resid*YHat.  Symbol is value of TIME.                                 
                                                                                                               
resid |                                                                                                        
   15 +                                                                                                        
      |                                                                                                        
      |                                                                                                        
      |                                                                     1                                  
      |                                                                                                        
      |                                                                                                        
   10 +                                                                                                        
      |                                          1                                                             
      |                                                                                                        
      |                                          2                                                             
      |  1                                                                               2                     
      |                            2                                        2                                  
    5 +                                                                                                        
      |               1                                                                                        
      |                                                       2                                                
      |                                                                                                        
      |  1                                                                                                     
      |                                                                                                        
    0 +-----------------------------------------------------------------------------------------------2--------
      |                                                                                                        
      |                            1                                                                  2        
      |                            2                                                     2                     
      |                                          1                          1                                  
      |                                                       1                                                
   -5 +                                                       1                                                
      |                                                                                                        
      |                                                       2                                                
      |                            1             2                                                             
      |                                                                     2                                  
      |                                                                                                        
  -10 +               1                                                                                        
      |                                                                                                        
      ---+----------+----------+----------+----------+----------+----------+----------+----------+----------+--
        35         40         45         50         55         60         65         70         75         80  
                                                                                                               
                                                         YHat                                                  


Chapter 9 : The effect of light on Meadowfoam flowering
Multiple regression
Plot of residuals

The UNIVARIATE Procedure
Variable: resid

Moments
N 24 Sum Weights 24
Mean 0 Sum Observations 0
Std Deviation 6.15465847 Variance 37.8798209
Skewness 0.21089332 Kurtosis -1.0360321
Uncorrected SS 871.23588 Corrected SS 871.23588
Coeff Variation . Std Error Mean 1.2563144

Basic Statistical Measures
Location Variability
Mean 0.00000 Std Deviation 6.15466
Median -1.55821 Variance 37.87982
Mode . Range 21.81715
    Interquartile Range 10.11845

Tests for Location: Mu0=0
Test Statistic p Value
Student's t t 0 Pr > |t| 1.0000
Sign M -1 Pr >= |M| 0.8388
Signed Rank S -2 Pr >= |S| 0.9559

Tests for Normality
Test Statistic p Value
Shapiro-Wilk W 0.955588 Pr < W 0.3563
Kolmogorov-Smirnov D 0.126766 Pr > D >0.1500
Cramer-von Mises W-Sq 0.068129 Pr > W-Sq >0.2500
Anderson-Darling A-Sq 0.405333 Pr > A-Sq >0.2500

Quantiles (Definition 5)
Quantile Estimate
100% Max 12.16488
99% 12.16488
95% 8.80631
90% 7.18940
75% Q3 5.70405
50% Median -1.55821
25% Q1 -4.41441
10% -7.62298
5% -8.25202
1% -9.65226
0% Min -9.65226

Extreme Observations
Lowest Highest
Value Obs Value Obs
-9.65226 9 6.67726 16
-8.25202 17 7.01845 12
-7.62298 7 7.18940 21
-7.51060 22 8.80631 6
-6.98131 20 12.16488 2

   Stem Leaf                     #  Boxplot                        Normal Probability Plot                     
     12 2                        1     |          13+                                            *+++          
     10                                |            |                                          +++             
      8 8                        1     |            |                                      ++*+                
      6 702                      3     |            |                                  **+*                    
      4 68                       2  +-----+         |                               **++                       
      2 79                       2  |     |         |                             **+                          
      0 49                       2  |  +  |         |                         ++**                             
     -0 83                       2  *-----*         |                      ++* *                               
     -2 95962                    5  |     |         |                   *****                                  
     -4 0                        1  +-----+         |                ++*                                       
     -6 650                      3     |            |             *+**                                         
     -8 73                       2     |          -9+      *  +*++                                             
        ----+----+----+----+                         +----+----+----+----+----+----+----+----+----+----+       
                                                         -2        -1         0        +1        +2            
                                                                                                               
                                                                                                               


Chapter 9 : The effect of light on Meadowfoam flowering
Analysis of Covariance

The GLM Procedure

Number of Observations Read 24
Number of Observations Used 24


Chapter 9 : The effect of light on Meadowfoam flowering
Analysis of Covariance

The GLM Procedure
 
Dependent Variable: FLOWERS

Source DF Sum of Squares Mean Square F Value Pr > F
Model 3 3467.276422 1155.758807 26.55 <.0001
Error 20 870.659845 43.532992    
Corrected Total 23 4337.936267      

R-Square Coeff Var Root MSE FLOWERS Mean
0.799292 11.75320 6.597954 56.13750

Source DF Type I SS Mean Square F Value Pr > F
INTENSity 1 2579.750045 2579.750045 59.26 <.0001
Time0 1 886.950342 886.950342 20.37 0.0002
INTENSity*Time0 1 0.576035 0.576035 0.01 0.9096

Source DF Type III SS Mean Square F Value Pr > F
INTENSity 1 1328.712043 1328.712043 30.52 <.0001
Time0 1 153.216013 153.216013 3.52 0.0753
INTENSity*Time0 1 0.576035 0.576035 0.01 0.9096

Parameter Estimate Standard Error t Value Pr > |t|
Intercept 71.62333349 4.34330481 16.49 <.0001
INTENSity -0.04107619 0.00743505 -5.52 <.0001
Time0 11.52333336 6.14236056 1.88 0.0753
INTENSity*Time0 0.00120952 0.01051475 0.12 0.9096