Question

The following table show the marks of 85 students of a class X in a school. Find the modal marks of the distribution

Answer 1

To find modal distribution following steps are:-

=>Find the maximum occurring frequency in the data. That class interval of the frequency is called as modal class.

=>The frequency which is occurring maximum time is called as f1.

=>The frequency of previous class of modal class is called as f0.

=>The frequency of the next class of the maximum occurring frequency is called as f2.

=>lower limit is called as l

=>Class size is known as h.

=>Formula is

-->l+h×{(f1-f0)/(2f1-f0-f2)}