Question

(a) What do you understand by the term Statistics? Give its chief
characteristics
(b) Describe briefly the different types of diagrams generally used for
presenting statistical data. State merits and demerits of any three of them.
(c) What criteria do you apply to judge the merits of an average? Discuss
the merits and demerits of the different averages in common use with
Special reference to these criteria.​

Answer 1

Answer:

a. Characteristics of Statistics

Statistics are numerically expressed. It has an aggregate of facts. Data are collected in systematic order. It should be comparable to each other. Data are collected for a planned purpose

b. It is a technique of presenting numeric data through pictograms, cartograms, bar diagrams, and pie diagrams. It is the most attractive and appealing way to represent statistical data. ... Bar diagrams are rectangular and placed on the same base. Their heights represent the magnitude/value of the variable.