There is no content available!


The most common value in a series is called mode.

It has the highest frequency among all observations.

It is possible that more than one value may have the same maximum frequency. In such situations, the data is said to be multimodal.

The class with maximum frequency in a ta
.... Read More


A number or a quantity which represents the set of data is called central tendency.

The number of times a particular observation occurs in a given set of

data is called its frequency.

The total of a frequency and all frequencies below it in a frequency

distribution ta
.... Read More

Quartile, Decile and Percentile

There is no content available!

Mean Deviation

There is no content available!

Variance and Standard Deviation

 Standard deviation is the positive square root of the mean of the squared deviation from the arithmetic mean.

The square of standard deviation is called variance.

Three methods for calculating variance and standard deviation are direct method, short-cut method or assumed mean met
.... Read More

To Access the full content, Please Purchase