Let's Work it Out

If the Mean is multiplied to Coefficient of Variation then the resulting value is classified as

• coefficient of Deviation

• Coefficient of Mean

• Standard Deviation

• Variance

If the Inter-Quartile Range is 24 then the Quartile Deviation is

The formula for Coefficient of Range is

• $\frac{H+L}{H-L}$

• $\frac{L+L}{H+H}$

• $\frac{H+H}{L+L}$

• $\frac{H-L}{H+L}$

The _______________ is the easiest measure of dispersion to calculate.

• Range

• Mean Deviation

• Standard Deviation

• Variance

While drawing Lorenz curve zero of X-axis and 100 on Y-axis are joined by a line. This line is known as

• Line of Income

• Line of Equal Distribution

• Line of Unemployment

• None

If mean and coefficient of variation of a set of data is 10 and 5, then S.D. is

Lorenz Curve : Used this technique to show

• equality of wealth and income of a group of people

• inequality of wealth and income of a group of people

• unemployment of a group of people

• employment of a group of people

Absolute measures of dispersion are

• Expressed in terms of original unit of series

• Expressed in ratios or percentage, also known as coefficients of dispersion.

• None

• Both

What would happen to the standard Deviation of a data set if we add 5 to every observation?

• Increase by 5

• Decrease by 5

• Unchanged

• Multiplied by 25

The symbol σ is used to represent