Hw 6 due Dec 5.
Use the data in 18.4, 18.9 and the following problem to provide the following:
1. An agricultural researcher is interested in the effects of nitrogen fertilization on two different
varieties of rice. Three different study sites are available for the experiment. It is decided that
each study site will be divided into six (6) rows and the six (6) levels of FERTILIZER (N1, N2, N3, N4,
N5 and N6) will be applied one to a row in random order. After the fertilizer has been applied
down, the rows of each study site are then divided into approximately equal sized halves and
the two (2) different VARIETIES (V1 and V2) of rice are applied according to a randomization
scheme. The yield (kg/ha) data resulting from this experiment are given below:
NITROGEN
1.
2.
3.
4.
5.
6.
7.
SITE 1
SITE 2
SITE 3
VARIETY
VARIETY
VARIETY
V1
V2
V1
V2
V1
V2
N1
1979
5301
1511
1883
3664
3571
N2
4572
5655
4340
5100
4132
5385
N3
5630
6339
6780
6622
4933
6332
N4
7153
8108
6504
8583
6326
7637
N5
7223
7530
7107
7097
6051
6667
N6
7239
7853
6829
7105
5874
7443
The Model (with explanation of terms)
The ANOVA Table
The p-value for the F test
Tukey or Fisher’s method for follow up and identification of which treatments are different
Plot of Residuals to Predicted
Normal probability plot
Overall critique of the results.