Tally marks are used to find class intervals                 (b)  range frequency                       (d)  upper limits

Tally marks are used to find (a) class interval (b) range (c) frequency (d) upper limit

The upper limit of class interval 20-30 is:

Upper limit of class interval 75-85 is

Find the class-marks of the class interval 10-25.

A grouped frequency distribution table is given below with class mark (mid values of class intervals) and frequencies. Find the class intervals.

Let x be the class mark & y be the upper limit of a class-interval in a continuous frequency-distribution. The lower limit of the class is:

The difference between the upper and the lower class limits is called mid-points (b) class size frequency (d) mean

The mid value of a class interval is 42 and the class size is 10. find the lower and upper limits.

If the class intervals of a frequency distribution are 1-10, 11-20, 21-30, …., 61-70 , Then the upper limit of 21-30 is