PhD (Ag), Course No: AST 555 , Full Marks: 100
Computer Application in Agricultural Statistics
Dept. of Agric. Statistics
Answer all the questions
1. Find out first four raw and central moment of following data of Ca content (mg/litre) in water
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38.48 41.68 40.08 32.06 26.45 33.67 40.08 48.29 40.08 34.47 42.48 40.08 34.47
42.48 40.08 43.29 40.08 35.27 40.08 44.89 40.88 36.87 24.05 36.87 40.88 45.69
2. Test the null hypothesis that the mean Ca content of water is equal to 34 mg/litre (use of data set of Q.1)
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3. Test the null hypothesis that the means of two rows of data set of Q.1 are equal where two rows represent two
ponds measured for Ca content (mg/litre) in water for same 13 weeks at a stretch.
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4. Add another row to data set of Q.1 and then test the null hypothesis that the means of three rows of new data set
are equal where three rows represent three ponds’ data of Ca content (mg/litre) in water for same 13 weeks at a
stretch. New row added is as given below:
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40.88 43.29 12.82 30.46 32.87 31.26 28.86 26.45 70.06 30.46 8.02 18.44 32.86
5. Assume data set of Q.1 as data of 13 same ponds’ Ca content (mg/litre) in water measured before and after
monsoon. Now test the change of Ca content before and after monsoon is significant or not.
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6. Education level of two samples of 14 villagers of two villages are drawn following SRSWOR and as given below:
V1 4 1 2 3 3 4 2 5 5 3 5 4 4 3 Test the equality of two villages mean scores of
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V2 4 4 2 3 4 4 5 5 4 4 3 2 5 4 Education level.
7. Mass media score of four sets of farmers where farmer number/ set are 25 and data set is given below:
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V1 8 6 9 8 5 7 8 7 6 8 9 7 6 6 8 4 4 7 6 5 6 6 7
V2 8 4 8 9 5 5 7 7 5 7 5 7 7 7 6 7 7 8 5 8 6 8 7
V3 7 7 5 5 5 9 7 6 5 4 7 9 6 5 8 7 6 8 4 9 7 8 6
V4 8 5 9 9 8 6 7 8 7 8 7 7 7 6 6 4 5 5 9 7 6 8 5
Test the equality of mean mass-media scores of four sets of farmers
8. Test that observed frequencies of all 9 classes are following ratio “1:2:2:4:1:2:1:2:1” of
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6
5
4
7
5
8
9
6
300 genotypes
Class 1 Class 2 Class 3 Class 4 Class 5 Class 6 Class 7 Class 8 Class 9
20
36
38
76
17
39
15
38
21
9. Download the excel data sheet and do the following:
10x5=50
(a) Sheet 1 data is to be analyzed using Split plot analysis (only ANOVA)
(b) Sheet 1 data is to be analyzed using Strip plot analysis (only ANOVA)
(c) Sheet 2 data is to be analyzed using RCBD pooled over year (only ANOVA)
(d) Sheet 3 data is to be analyzed for step-wise multiple regression using corn yield as Y (dependent) and other all as
X (independent) variables
(e) Sheet 3 data is to be analyzed for all possible Pearson's correlation coefficient matrix
Note: Submit only SPSS output file (version 10 to 20)
Course Instructor- D. Mazumdar