Question

c) What is the class interval of the age groups taken?
d) What is the method used for class interval?
e) Which category hus highest mean scores on variable A?
1) Which category has lowest mean scores on variable A?
g) How many categories (age groups) have obtained mean scores on Variable A below 64?
h) How many categories (age groups) have obtained mean scored on Variable A above 63?
i) Mean score of 61 has been obtained by which category (age group)?
D Mean score of 56 has been obtained by which category (age group)?​

Answer 1

c)The class intervals are the subsets into which the data is grouped. The width of the class intervals will be a compromise between having intervals short enough so that not all of the observations fall in the sameinterval, but long enough so that you do not end up with only one observation per interval.

d)Creating class intervals, which is the range of each group of data, helps organize data so we can more easily analyze it; they're often commonlyused numbers, such as 2, 3, 5, 10, and 20. To create class intervals, divide the difference of the greatest and least data by the number of classes you want to have.

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