# Frequency Distribution And Data Quiz

The grouped data are called:

## (a) Primary data  (b) Secondary data  (c) Raw data  (d) Difficult to tell

The suitable formula for computing the number of classes is:

## (a) 3.322 logN  (b) 0.322 logN (c) 1+3.322 logN  (d) 1- 3.322 logN

The extreme values used to describe the different classes in a frequency distribution are called:

## (a) Class intervals   (b)  Class boundaries (c)  Class limits  (d)  Cumulative frequency

The class boundaries can be taken when the nature of variable is:

## (a) Discrete   (b) Continuous (c) Both (a) and (b)   (d) Qualitative

Class boundaries are also called:

## (a) Mathematical limits (b) Arithmetic limits (c) Geometric limits  (d) Qualitative limits

The average of lower and upper class limits is called:

## (a) Class boundary (b) Class frequency (c) Class mark   (d) Class limit

The lower and upper class limits are 20 and 30, the midpoints of the class is: The average of lower and upper class limits is called:

## (a) 20 (b) 25 (c) 30   (d) 50

A grouping of data into mutually exclusive classes showing the number of observations in each class is called:

## (a) Frequency polygon (b) Relative frequency (c)  Frequency distribution   (d) Cumulative frequency

The class frequency divided by the total number of observations is called:

## (a) Percentage frequency  (b) Cumulative frequency (c) Bivariate frequecy   (d) Simple frequency

In a relative frequency distribution, the total of the relative frequencies is: