Question

A school teacher wants to analyse results. 

Identify the appropriate statistical technique to be used along with its justification for the following cases:

a) Teacher wants to compare performance in terms of division secured by students in Class XII A and Class XII B where each class strength is same.

b) Teacher has conducted five unit tests for that class in months July to November and wants to compare the class performance in these five months.

Answer 1

a) Mean is the statistical technique to be employed in this case because it will provide the average value of the marks of both the classes which will give us a clear understanding of the performance. Higher the average, higher the performance of the class.

b) Mean will be suitable technique to compare class performance months wise. Take average marks of all students per month and compare them to realize if it is increasing or decreasing.