The mean deviation of a frequency dist. is equal to

What is the algebraic sum of deviations of a frequency distribution about its mean?

What is the algebraic sum of deviations of a frequency distribution about its mean?

Find the mean , variance and standard deviation for the frequency distribution.

If the co-efficient variance and standerd deviation of two frequency distribution are 60% and 18, 15 respectively, then find the arithimetic mean of the two frequency distribution.

Quartile deviation for a frequency distribution is

Quartile deviation for a frequency distribution is

Mean Deviation of a Descrete Frequency Distribution

Mean deviation from mean of the data is

In FM, frequency deviation is