Guidance class|interaction class

In the given histogram, which class is the median class?

From the following frequency table. Find : (a) The frequency of fifth class interval (b) The upper class limit of third class interval. (c) The lower class limit of second class interval. (d) The class mark of sixth class interval.

The class size of a distribution is 25 and the first class-interval is 200-224. There are seven class-intervals. Write the class-intervals. Write the class-marks of each interval.

The mid-value of a class interval is 25 and the class size is 8. The class interval is

Class mark of a particular class is 6.5 and class size is 3, then class interval is:

Explain the meaning of the following: (i) Class-interval(ii) Class size (iii) Frequency (iv) Class limits (v) True class limits

Explain the meaning of the following terms: variate (ii) class-integral (iii) class-size class-mark (v) frequency class limites (vii) true class limits

Refer to the figures, (A, B and C) and arrange them in an order of list class lever, second class lever and third class lever.