LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
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M.Sc. DEGREE EXAMINATION – ZOOLOGY
SECOND SEMESTER – APRIL 2008
ZO 2953 – BIOSTATISTICS
Date : 29/04/2008 Dept. No. Max. : 100 Marks
Time : 1:00 – 4:00
PART – A
Answer ALL the questions. 10x 2 = 20 Marks
- What is probability distribution?
- What is standard deviation?
- Explain frequency polygon.
- What is meant by chance selection?
- What is the significance of chi square analysis?
- What is the significance of three dimensional graph?
- What is meant by degree of freedom?
- Differentiate primary and secondary data collection.
- What is co-efficient of range?
- Classify sampling techniques.
PART – B
Answer any FOUR of the following 4 x 10 = 40 Marks
- How is a table formed? Give its components.
- What is the significance of ANOVA? How is it implemented.
- Draw a pie diagram for the following data and write its significance.
| Cat | 3 |
| Bat | 7 |
| Calotes | 12 |
| Insects | 23 |
| Worms | 17 |
- What are the different kinds of regression?
- What is Hardy Wein Berg law?
- Draw histogram and a cumulative frequency of the following data.
| Young (size in mm) | 1-4 | 4-8 | 8-12 | 12-16 |
| Frequency (Number) | 9 | 7 | 14 | 20 |
PART – C
Answer any TWO of the following 2 x 20 = 40 Marks
- What are primary and secondary data? How is it documented?
- Write a note on computer applications in bio-statistics.
- Calculate chi square in the given data. Tvalue = 3.84 at df = 3
| Affected | NotAffected | |
| Treated | 7 | 9 |
| UnTreated | 17 | 2 |
- By ANOVA find if there is an increase in paddy production in different sub species in different plots. Tv=3.49
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