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

Define the following terms: Observations (ii) Raw data Frequency of an observation Frequency distribution Discrete frequency distribution Grouped frequency distribution class-interval (viii) Class-size Class limits (x) True class limits

Classes or Class Intervals

Define and understand the following terms: (i) Phylum (ii) Class (iii) Family (iv) Order (v) Genus

If a class mark of a class-interval 8.5. The class size is 5,then the class limits of the corresponding class-interval is

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

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.