Roll No.
Total No. of Pages : 03
Total No. of Questions : 09
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B.Sc.(Agriculture) (2014 & Onwards) (Sem.-4)
BASIC STATISTICS
Subject Code : BSAG-409
M.Code: 72761
Time: 3 Hrs.
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Max. Marks : 60
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.
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SECTION-A
Q1. Write briefly :
- Standard deviation
- Exhaustive events
- Chi-square Test
- Types of correlation
- Assumptions of F-test
- Probability
- Kurtosis
- Type I error
- Level of significance
- Null Hypothesis
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SECTION-B
Q2. A bag contain 5 black, 3 white and 2 red balls. In how many ways can :
- 3 balls be drawn
- 3 black balls be drawn
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Q3. Daily income of ten families of a particular place is given below : Find geometric mean and harmonic room.
85, 70, 15, 75, 500, 8, 45, 250, 40, 36
Q4. Calculate coefficient of correlation by Karl Pearson's method, Spearman's Rank Correlation and its testing from the following data.
| X | Y |
|---|---|
| 6 | 9 |
| 2 | 11 |
| 10 | 6 |
| 4 | 8 |
| 8 | 7 |
Q.5. To verify whether a course in accounting improved performance a similar test was given to 12 participants both before and after the course. The original marks were recorded in alphabet order.
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Before Course 44 40 61 52 32 44 70 41 67 72 53 72
After Course 53 38 69 57 46 39 73 48 73 74 60 78
Q.6. What do you mean by Normal Distribution? Explain its properties in detail.
SECTION-C
Q7. An experiment was conducted on wheat with three experiments in four Randomized Block Design (RBD). The field plan and yield per pilot in Kg are given in the following data. Analyze the data state the conclusion.
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| Blocks | I | II | III | IV |
|---|---|---|---|---|
| Treatment | ||||
| A | 8 | 6 | 5 | 7 |
| B | 9 | 15 | 10 | 11 |
| C | 19 | 12 | 14 | 15 |
Q8. a) What do you mean by Averages? Explain different types of Averages.
b) Calculate Arithmetic mean, median and mode from the following frequency distribution :
| Variable | Frequency | Variable | Frequency |
|---|---|---|---|
| 10-13 | 8 | 25-28 | 54 |
| 13-16 | 15 | 28-31 | 36 |
| 16-19 | 27 | 31-34 | 18 |
| 19-22 | 51 | 34-37 | 9 |
| 22-25 | 75 | 37-40 | 7 |
Q9. Define Statistics. Explain its uses and Limitations in detail.
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 Last 10 Years 2010-2020 Previous Question Papers || Punjab Technical University
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