**931. The harmonic mean of 3,4 and 8 is****A.3.43**

B.3

C.4

D.8

**932. The geometric mean of 2,4 and 8 is**

A.3

B.5

C.2**D.4**

**933. Value of [(n +1)⁄2]th term is the formula of**

A.2nd quartile

B.median

C.1st quartile**D.both A and B**

**934. A many sided closed figure used in frequency distribution is termed as****A.frequency polygon**

B.frequency hexagon

C.frequency pentagon

D.frequency decagon

**935. By adding all numbers in the set together and then total is divided by the number of scores in that set, we obtained**

A.geometric mean**B.arithmetic mean**

C.standard deviation

D.variance

**936. The total number of observations , which are below a certain value are known as**

A.class boundaries

B.class marks**C.cumulative frequency**

D.variances

**937. The most frequent observation in a data set is called****A.mode**

B.median

C.range

D.mean

**938. Frequency polygon is constructed by plotting frequencies against their**

A.standard deviations**B.class marks**

C.variances

D.means

**939. The range in the data 18, 25, 12, 13, 8, 9, 20 is equal to**

A.11

B.33

C.13**D.17**

**940. The summary statistics which measure the middle or center of the data are called**

A.logarithms**B.measures of central tendency**

C.measures of dispersion

D.proportions