1 
The positive square root of mean of the squared deviation of X,{1=1,2,3,.......n) observations from their arithmetic mean is called. 
 A. Harmonic mean
 B. Range
 C. Standard deviation
 D. Variance

2 
Mean is affected by change in .......... 
 A. Place
 B. Scale
 C. Rate
 D. None of these

3 
The spread of observations in a data set is called. 
 A. Average
 B. Dispersion
 C. Central tendency
 D. Mean

4 
The mean of the squared deviations of x1,(i = 1,2.........,n) observations from their arithmetic mean is called..................... 
 A. Variance
 B. Standard deviation
 C. Range
 D. Mode

5 
Rang =................. 
 A. X<sub>m </sub>+ X<sub>o</sub>
 B. X<sub>m</sub>X<sub>o</sub>
 C. X<sub>m/</sub>X<sub>o</sub>
 D. <sub></sub>X<sub>o/</sub>X<sub>m</sub>

6 
If θ lies in 2nd (second) quadrant then sin θ and cosecθ are: 
 A. negative
 B. positive
 C. zero
 D. undefined

7 
One minute is denoted by: 
 A. 1'
 B. 1''
 C. 1°
 D. 60'

8 
On the basic of types of variable of data, the types of frequency distribution are. 

9 
The mode in the data 1,3,5,3,7,9 

10 
A part of the circumference of a circle is called a/an : 
 A. angel
 B. are
 C. circumference
 D. radian
