Describe the different step in the construction of frequency distribution?

     Describe the different step in the construction of frequency distribution?

Answer:

Frequency distribution is a statistical table which shows the set of all distinct values of the variable arranged in order of magnitude, either individually or in groups with their corresponding frequencies side by side.

Construction of frequency distribution: The following are the important step to construct on continuous frequency distribution..

Step 1: Determination of range:  the range (R) of a set of observation is the difference between two extreme values, i.e, the difference between the maximum and minimum values. Therefore, it indicates the limits within which all the observation fall. In the form of an equation:

Range= Highest value - Lowest value.

Step 2: Determination of the number of class:  According to the maximum statistician,. The number of classes should be in the range 5 and 25.

Step 3: Determination of the class internal: In this step we will find out the class internal, usually the number of classes lies between 5 to 25. So we divided the range by 25 and 5.

Step 4: Determination of class limit: The class units are the lowest and the highest values that can be include in the class. The lowest limit of a class in the value below which there can be no value in the class. The upper limit of a class is the value above which no value can belong to the class.

Step 5 : Tally and frequency: Take each item from the data, one at a time and put a Tally mark (I) under the column Tally mark against the class to which the item belong. Count the Tally marks of column 2 headed by ‘frequency’ and place this place this number against the class to which the item belongs.

At last we have to give the suitable title to the frequency distribution table so that it conveys exactly the information contained in it.