The formula Upper class limit+Lower class limit2 is known as
Assertion: We find midpoints of a class interval with the following formula. upper class limit+lower class limit2 Reason: To draw frequency polygons independently without drawing histogram it is required to have the class mark. Which of the following is correct?
The steps to convert an irregular class interval into a regular one, are
Step 1: Compute correction factor which is upper class limit-lower class limit of previous class interval2.
Step 2: This is added to the upper limit and subtracted from the lower limit of each class.