| 1 |
Harmonic mean for 1,2,5,8,4 is.................... |
- A. 6.08
- B. 5.08
- C. 7.08
- D. 4.08
|
| 2 |
In a circle radius 10 what is the length of are intercepted by a central angle of 60°: |
- A. π/3m
- B. 3/10πm
- C. 10π/3m
- D. π/30m
|
| 3 |
A cumulative frequency curve is also called: |
- A. Histogram
- B. Pie chart
- C. Ogive
- D. Frequency polygon
|
| 4 |
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
|
| 5 |
The mean of the squared deviations of X observations from their arithmetic mean is called. |
- A. Variance
- B. Standard deviation
- C. Range
- D. Harmonic mean
|
| 6 |
In the given set of data 5,7,7,5,3,7,2,8,2 mode is: |
|
| 7 |
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>
|
| 8 |
Mean of a variable with similar observations say constant k is............ |
- A. Negative
- B. K- itself
- C. zero
- D. one
|
| 9 |
A frequency polygon is a many sides. |
- A. Closed figure
- B. Rectangle
- C. Circle
- D. Triangle
|
| 10 |
Variance is denoted by........................... |
- A. V
- B. S
- C. S<sup>2</sup>
- D. X
|
