Frequency Distribution Concept

Frequency Distribution Concept

Frequency distribution is division of data into different classes, and number observation fall in each class is represented by frequency. As data is divided into different groups, therefore frequency distribution is also called grouped data.

Frequency Distribution Purposes

Frequency distribution main purposes are to arrange the data in a meaningful manner.  Other important purpose of frequency distribution is to manage huge volume of data.

Frequency Distribution Class limits

Frequency distribution class limits are consisting of lower class limit and upper class limit; these limits identify the data limit for that class. Class limits are inclusive in nature.

Frequency Distribution Class boundary

Frequency distribution class boundary defines the class limits more clearly and any difficult for defining class for a value may be overcome with frequency distribution class boundary. Therefore class boundary used one more decimal than class limits.

Frequency Distribution class boundary is midway point between higher class limit of a class and lower class limits of next class.

Frequency Distribution Class Mark

Frequency distribution class mark is middle or midpoint of a class i.e. divides each class into two equal parts. Class mark can be calculated with very easy formula i.e. summing up the upper and lower class limits and dividing the result (sum) with 2.