| 1 |
The nth root of product of 'n' number of values is called: |
- A. Arithematic mean
- B. Geometric mean
- C. Harmonic mean
- D. Standard deriviation
|
| 2 |
∑▒〖(x-〗 x ̅)=…………. |
|
| 3 |
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
|
| 4 |
The average pocket money of 30 students is Rs.20/- , The total amount in the class is: |
- A. Rs.20/-
- B. Rs.30/-
- C. Rs.300/-
- D. Rs.600/-
|
| 5 |
In the given set of data 5,5,5,5,5,5,5 the standard deriation is: |
- A. 5
- B. 0
- C. 7
- D. None of these
|
| 6 |
The number of time a value appears on a set of data is called: |
- A. Frequency
- B. Average
- C. Mode
- D. Median
|
| 7 |
The extent of variation between two extreme observations of a data set is measured by: |
- A. Average
- B. Range
- C. Quartiles
|
| 8 |
Sum of deviations of the variable X from its mean is always_____________ |
- A. Zero
- B. One
- C. Same
- D. None
|
| 9 |
The formula of area of circular sector is: |
- A. <i>l</i> = rθ
- B. r<sup>2</sup>θ
- C. 1/2r<sup>2</sup>θ
- D. 2r<sup>2</sup>θ
|
| 10 |
Variance is denoted by........................... |
- A. V
- B. S
- C. S<sup>2</sup>
- D. X
|
