-------------- is used by business in market research to determine the acceptability of a product that will be demanded at various prices by a given population in a geographical area.

Set A and B are equal if and only if they contain the same ------------

Four factorial (4!)is equal to----------------

The variance of a distribution is the ----------of the standard deviation of the distribution

---------------is a single value computed from the set of data that measures the central item in the data

The -----------of two sets A and B is another set consisting of all elements either in A or B or both

Combination is an arrangement of objects without regard to ------------

The following are types of questionnaire except---------

Variables which take specific values are referred to as -------------

------------- is the part of the population that is selected for study.