| 1 |
The mean of the squared deviations of x<sub>i</sub> (i = 1, 2, -----------------,n) observations form their arithmetic mean is called: |
- A. Variance
- B. Standard deviation
- C. Range
|
| 2 |
Median from the data 2.3,2.7,2.5,3.1 and 1.9 Is......................... |
- A. 2.3
- B. 2.5
- C. 2.7
- D. 2.9
|
| 3 |
A cumulative frequency curve is also called: |
- A. Histogram
- B. Pie chart
- C. Ogive
- D. Frequency polygon
|
| 4 |
The n<sup>th</sup> positive root of the product of the x<sub>1</sub>,x<sub>2</sub>,x<sub>3</sub>..................x<sub>n</sub> observations is called: |
- A. Mode
- B. Mean
- C. Geometric mean
|
| 5 |
Types of dispersion are......................... |
|
| 6 |
Mode from the following data ,4.4,5.5,6.6,7.7,8.8,6.5,6.5,7 is.......... |
|
| 7 |
A group frequency table is called. |
- A. Data
- B. Frequency distribution
- C. Frequency polygon
- D. None of these
|
| 8 |
The measure which determines the middlemost observation in a data set is called................... |
- A. Median
- B. Mode
- C. Mean
- D. Variance
|
| 9 |
∑▒〖(x-〗 x ̅)=…………. |
|
| 10 |
Variance is denoted by........................... |
- A. V
- B. S
- C. S<sup>2</sup>
- D. X
|