**811. Standard deviation of 5,5,5,5,5 is equal to**

A. unity

B. 8

C. 2**D. zero**

**812. One-half the difference between the third and first quartile is called __________**

A. Mean deviation**B. Quartile deviation**

C. standard deviation

D. Coefficient of quartile deviation

**813. ___________ is the central value of an array data.**

A. Mean**B. median**

C. mode

D. Harmonic mean

**814. When deviations are taken from median sum of absolute deviation of the value is_______________**

A. Zero**B. Minimum**

C. Maximum

D. more than zero

**815. It is impossible to find ____________ if the values have same numbers in a series.**

A. Median

B. mode

C. Mean**D. weighted mean**

**816. A distribution having two modes is called**

A. Symmetrical**B. Bi modal**

C. Multi modal

D. uni modal

**817. If mode is greater than mean then the distribution is**

A. symmetrical**B. positively skewed**

C. Negatively Skewed

D. None of theseĀ

**818. The relation between mean, median and mode for a unimodal distribution is _________________**

A. mean >median>mode

B. mean<median<mode**C. Mean=median=mode**

D. mean<median>mode

**819. Which mean is use for calculating average rate of debt growth for a company ?**

A. Arithmetic mean**B. Weighted mean**

C. Harmonic mean

D. Geometric mean

**820. Which one from the following average is suitable for qualitative data?**

A. Median**B. mode**

C. Mean

D. weighted mean