The Apparent Limits should be selected (should be a multiple of Interval size).

The interval size should be selected and the number of intervals should be calculated as follows: Range/Interval size.

Range=High Score-Low ScoreThe group frequency distribution should be created

The high and low scores should be determined and the range should be calculated, as follows:.

In order to make class intervals in statistics the next steps should be accomplished : The width of each class interval could be equal or different depending on situation and on the way of how the data is grouped, but the size of the interval is always a whole number. The correct selection of the class interval is very important. Each class has its own width, which is called the class interval.

If the data is organized in groups, which are called classes, the data is referred to as grouped data. Ungrouped data is a rough data which have been just gathered and no further steps were performed on this data. Groups of information in statistics in form of qualitative or quantitative attribute of set of variables are referred as data.

Making a structure in no limits 2