**721. If mean=25, median=30 and standard deviation=15, the distribution will be:**

A.Symmetrical

B.Positively skewed**C.Negatively skewed**

D.Normal

**722. In a symmetrical distribution, Q3 – Q1 = 20, median = 15. Q3 is equal to:**

A.5

B.15

C.20**D.25**

**723. The degree of peaked ness or flatness of a unimodel distribution is called:**

A.Skewness

B.Symmetry

C.Dispersion**D.Kurtosis**

**724. In a mesokurtic or normal distribution, 4 = 243. The standard deviation is:**

A.81

B.27

C.9**D.3**

**725. The measurements of spread or scatter of the individual values around the central point is called:****A.Measures of dispersion**

B.Measures of central tendency

C.Measures of skewness

D.Measures of kurtosis

**726. If all the scores on examination cluster around the mean, the dispersion is said to be:****A.Small**

B.Large

C.Normal

D.Symmetrical

**727. The range of the scores 29, 3, 143, 27, 99 is:****A.140**

B.143

C.146

D.70

**728. The sum of absolute deviations is minimum if these deviations are taken from the:**

A.Mean

B.Mode**C.Median**

D.Upper quartile

**729. Which of the following measures of dispersion is expressed in the same units as the units of observation?**

A.Variance**B.Standard deviation**

C.Coefficient of variation

D.Coefficient of standard deviation

**730. The standard deviation is independent of:****A.Change of origin**

B.Change of scale of measurement

C.Change of origin and scale of measurement

D.Difficult to tell

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