Business Statistics- Internal 2

Which of the following is not a measure of dispersion?

• range

• variance

• standard deviation

• mode

The heights of some students are given.

158cm 172cm 164cm

164cm 167cm 159cm

What is the range of the heights?

• 13cm

• 14cm

• 164cm

• 330cm

It is defined as the square root of the variance.

• coefficient of variation

• midrange

• standard deviation

• kurtosis

Which of the following are characteristics of a good measure of dispersion?

• It should be easy to calculate   

• It should be based on all the observations within a series

• It should not be affected by the fluctuations within the sampling 

• All of the above

While calculating the standard deviation, the deviations are only taken from

• The mode value of a series

• The median value of a series

• The quartile value of a series

• The mean value of a series

The shape of symmetrical distribution is

• W Shaped

• Bell Shaped

• O Shaped

• None of these

Correlation Coefficient r value lies between

• 0 and 1

• -2 and +2

• -1 and 0

• -1 and +1

A curve whose tail is long to the right is called

• Negatively skewed

• Positively skewed

• Symmetrical

• none of the above

Skewness measures the ________ of the distribution

• Height

• Shape

• Both a & b

• None

In a Normal distribution cure the relationship between Mean, Median and Mode is

•  Equal

• Zero

• Negative

• None of the above