| 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
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| 2 |
A cumulative frequency table is also called: |
- A. Frequency distribution
- B. Data
- C. Less than cumulative frequency distribution
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| 3 |
The difference between upper limit of two consecutive classes is a frequency table is called: |
- A. Class limit
- B. Class interval
- C. Class mark
- D. All of these
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| 4 |
median from the data 82,93,86,92 and 79 is................. |
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| 5 |
A value best representing a set of data is called: |
- A. Average
- B. Variance
- C. Standard deriviation
- D. None of these
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| 6 |
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
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| 7 |
In class (20-29), Midpoint or class mark is................... |
- A. 20.5
- B. 24.5
- C. 29
- D. 49
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| 8 |
In a set of observation. 5,5,7,9,9,9,9,11,11,11,11,12,12 the mode is: |
- A. 9
- B. 11
- C. Both 9 and 11
- D. None of these
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| 9 |
The spread or scatierness of observations in a data set is called. |
- A. Average
- B. Dispersion
- C. Central tendency
- D. Quartile
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| 10 |
The measure which determines the middle most observation in a data set is called. |
- A. Median
- B. Mode
- C. Mean
- D. Rang
|