LOYOLA COLLEGE (AUTONOMOUS), CHENNAI – 600 034
M.Sc. DEGREE EXAMINATION - ZOOLOGY
SECOND SEMESTER – APRIL 2008
DE 27
ZO 2953 - BIOSTATISTICS
Date : 29/04/2008
Time : 1:00 - 4:00
Dept. No.
Max. : 100 Marks
PART - A
Answer ALL the questions.
10x 2 = 20 Marks
1. What is probability distribution?
2. What is standard deviation?
3. Explain frequency polygon.
4. What is meant by chance selection?
5. What is the significance of chi square analysis?
6. What is the significance of three dimensional graph?
7. What is meant by degree of freedom?
8. Differentiate primary and secondary data collection.
9. What is co-efficient of range?
10. Classify sampling techniques.
PART – B
Answer any FOUR of the following
4 x 10 = 40 Marks
11. How is a table formed? Give its components.
12. What is the significance of ANOVA? How is it implemented.
13. Draw a pie diagram for the following data and write its significance.
Cat
3
Bat
7
Calotes
12
Insects
23
Worms
17
14. What are the different kinds of regression?
15. What is Hardy Wein Berg law?
16. Draw histogram and a cumulative frequency of the following data.
1
Young (size in
1-4
4-8
8-12
12-16
9
7
14
20
mm)
Frequency
(Number)
PART – C
Answer any TWO of the following
2 x 20 = 40 Marks
17. What are primary and secondary data? How is it documented?
18. Write a note on computer applications in bio-statistics.
19. Calculate chi square in the given data. Tvalue = 3.84 at df = 3
Affected
NotAffected
Treated
7
9
UnTreated
17
2
20. By ANOVA find if there is an increase in paddy production in different sub species in different
plots. Tv=3.49
2
21. A
22. B
23. C
24. D
25. 4
26. 5
27. 6
28. 5
29. 7
30. 9
31. 7
32. 3
33. 9
34. 7
35. 4
36. 5
37. 3
38. 1
39. 8
40. 7