Define statistics as a subject.

Define some fundamental characteristics of statistics.

What are primary data and secondary data? Which of the two is more reliable and why?

Explain the meaning of each of the following terms:

(i) Variate

(ii) Class interval

(iii) Class size

(iv) Class mark

(v) Class limit

(vi) True class limits

(vii) Frequency of a class

(viii) Cumulative frequency of a class

Following data gives the number of children in 40 families:

1, 2, 6, 5, 1, 5, 1, 3, 2, 6, 2, 3, 4, 2, 0, 4, 4, 3, 2, 2, 0, 0, 1, 2, 2, 4, 3, 2, 1, 0, 5, 1, 2, 4, 3, 4, 1, 6, 2, 2.

Represent it in the form of a frequency distribution, taking classes 0-2, 1-4, etc.