Question

4. Explain the concepts of:
(i) Class interval,
(ii) Individual series,
(iii) Frequency array, and
(iv) Frequency distribution.​

Answer 1

Answer:

(i) the size of each class into which a range of a variable is divided, as represented by the divisions of a histogram or bar chart.

(ii) Individual Series is a statistical series in which the all the observations are listed out and all the observations have a frequency of 1.

(iii)A Frequency array is an array of frequencies according to variate values, that is to say, a frequency distribution. The term “array” is often used for the individual frequency distributions which form the separate rows and columns of a bivariate frequency table.

(iv) A mathematical function showing the number of instances in which a variable takes each of its possible values.