Question

If a data a having coefficient of variation is 50 standard deviation is 20 then mean of data is 40.​

Answer 1

Answer:

Hi

Step-by-step explanation:

Hint: In this question the coefficient of variation and standard deviation of distribution are given, then in order to find its mean we will use the simple formula of coefficient of variation which is given by

Coefficient of variation =σx¯¯¯×100

Where

x¯¯¯ is the mean distribution.

and σ is the standard deviation.

Hence required mean is 40 and the correct answer is Option “A”.

Note: In order to solve problems related to standard deviation, mean deviation, co- variance etc. remember all the formulas. The concept behind them is simple such as mean can be termed as average of the given data or quantities. Similarly the standard deviation can be defined as the quantity expressing how many members of a group differ from the mean value of that group.