Roll No. Total No. of Pages : 02
Total No. of Questions : 09
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B.Sc.(Agriculture) (2014 to 2018) (Sem.-4)BASIC STATISTICS
Subject Code : BSAG-409
M.Code : 72761
Time : 3 Hrs. Max. Marks : 60
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INSTRUCTIONS TO CANDIDATES :
- SECTION-A is COMPULSORY consisting of TEN questions carrying TWO marks each.
- SECTION-B contains FIVE questions carrying FIVE marks each and students have to attempt any FOUR questions.
- SECTION-C contains THREE questions carrying TEN marks each and students have to attempt any TWO questions.
SECTION-A
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Q1. Write briefly :
- Coefficient of Variation (C.V.)
- Poisson Distribution
- Median
- Assumptions of linear regression
- Mutually Exclusive Events
- Non-Probability sampling
- Degrees of freedom
- Standard Error
- Skewness and Kurtosis
- Alternative Hypothesis
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SECTION-B
2. A bag contains 5 white and 8 red balls. Two drawings of 3 balls are made such that (a) the balls are replaced before the second trial, and (b) the balls are not replaced before the second trial. Find the probability that the first drawing will give 3 white balls in each case.
3. Daily income of ten families of a particular place is given below : Find geometric mean and Harmonic mean from the following data?
85, 70, 15, 75, 500, 8, 45, 250, 40, 36
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4. Calculate coefficient of correlation by Karl Pearson’s method and its testing from the following data ?
| X | 6 | 2 | 10 | 4 | 8 |
|---|---|---|---|---|---|
| Y | 9 | 11 | 6 | 8 | 7 |
5. Explain briefly the assumptions required to test the equality of two means. Blood pressure (diastole) are taken on 6 men before and after a full mean and the results are given below (mm)
| BP Before meal | 121 | 119 | 124 | 122 | 123 | 120 |
|---|---|---|---|---|---|---|
| BP After meal | 124 | 122 | 124 | 125 | 127 | 123 |
Can it be concluded that blood pressure (diastole) increase average after the intake of full meal?
6. Define probability. Explain the additive and multiplicative laws of Probability?
SECTION-C
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7. An experiment was conducted using Nitrogen (N) and Phosphorous (P). The yields recorded from each plot are given below. Each treatment combination was applied in two plots. Analyze the data.
| Nitrogen | ||||
|---|---|---|---|---|
| Phosphorous | N1 | N2 | N3 | N4 |
| P1 | 30, 34 | 35, 37 | 38, 36 | 32, 34 |
| P2 | 32, 35 | 34, 38 | 36, 38 | 32, 38 |
| P3 | 42, 40 | 38, 42 | 40, 42 | 38, 40 |
8. For the following data an fertilizer (X) and yield (Y)
| Fertilizer (X) | 20 | 35 | 40 | 45 | 50 | 55 | 60 | 65 | 70 |
|---|---|---|---|---|---|---|---|---|---|
| Yield (Y) | 40 | 100 | 128 | 145 | 160 | 170 | 160 | 150 | 140 |
Fit function Y = b0 + b1X + U
9. Define statistics? How it relates with other sciences?
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any page of Answer Sheet will lead to UMC against the Student.
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This download link is referred from the post: PTU B.Sc-Agriculture 2020 March Previous Question Papers
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