| 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 |
Sec<sup>2</sup> θ -tan<sup>2</sup>θ =______________. |
- A. sec<sup>2</sup>θ
- B. cos<sup>2</sup>θ
- C. 1
- D. sin<sup>2</sup>θ
|
| 3 |
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
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| 4 |
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
|
| 5 |
The extent of variation between two extreme observations of a data set is measured by: |
- A. Average
- B. Range
- C. Quartiles
|
| 6 |
A data in the form of frequency distribution is called: |
- A. Grouped data
- B. Ungrouped data
- C. Histogram
|
| 7 |
The extent of variation between two extreme observations of a data set is measured by....................... |
- A. Average
- B. Range
- C. Quartiles
- D. Mode
|
| 8 |
The measures that are used to determine the degree or extent of variation in a data set are called measures of........................... |
- A. Dispersion
- B. Central tendency
- C. Average
- D. Quartile
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| 9 |
Mean is affected by change in: |
- A. Value
- B. Ratio
- C. Origin
|
| 10 |
A histogram is a set of adjacent. |
- A. Squares
- B. Rectangles
- C. Circles
- D. Closed figures
|