**CS/B.OPTM/SEM-6/BO-603/2013**

**2013**

**BIO-STATISTICS**

*Time Allotted : 3 Hours Full Marks : 70*

*The figures in the margin indicate full marks.*

*Candidates are required to give their answers in their own words*

*as far as practicable.*

**Graph sheet(s) will be supplied by the institution.**

**GROUP – A**

**( Multiple Choice Type Questions )**

1. Choose the correct alternatives for any ten of the following :

10 × 1 = 10

i) Correlation coefficient depends on

a) origin b) scale

c) both (a) and (b) d) none of these.

ii) The median of the following data :

12, 5, 7, 10, 4, 9, 15, 14, 2

is

a) 9 b) 10

c) 12 d) 4.

iii) The range of the values 148, 154, 158, 160, 161, 162,

170, 182, 195, 236 is

a) 45 b) 88

c) 148 d) 236.

iv) The co-efficient of variation is 40, and mean is 30. The

S.D. is

a) 8⋅5 b) 12

c) 7⋅75 d) 9.