research statistic exercises

1. Exercise

2. Exercise 1
• Weight 52 medical student are given.
Tabulation the data in appropriate class
interval usually tally mark system( Weight
are given in Kg).

3. 51 53 52 39 58 48 45 56 62
64 67 66 42 48 43 44 45 47
52 54 50 49 38 38 39 32 34
36 38 42 43 48 49 50 51 52
30 30 31 32 45 45 47 46 48
49 58 67 33 34 36 38

4. • Present the data in form of histogram,
frequency polygon.

5. Exercise 2
• Population of different countries are given .
Draw a pie diagram.
Country Population
India 100 crores
China 132 crores
Indonesia 21 crores
USA 28 crores
Pakistan 15 crores
Sri lanka 1.8 crores

6. Exercise 3
Calculate mean, median, mode, range
and standard deviation.
4 15 30 25 30 35 10 40 56 16 14 30

7. Exercise 4
• Calculate mean and SD of following-
Age Group No. Of Employs
20-25 26
25-30 44
30-35 60
35-40 101
40-45 109
45-50 84
50-55 66
55-60 10

8. Exercise 5
• Calculate chi- square given below data
Result Brand A Brand B Brand C Brand D
No Damage Of
Teeth 9 13 17 11
Slight Damage 63 70 85 82
More Damage 28 37 48 37

9. Exercise 6
• Mention the measure of central tendency
Class interval Frequency
60-64 2
55-59 4
50-54 3
45-49 5
40-44 6
35-39 4