Statistics

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Q 1. If the difference between mean and mode is 63, the difference between mean and median is

189

21

31.5

48.5

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Q 2. Mean of {tex}20{/tex} observation is {tex} 15.5 . {/tex} Later it was found that the observation {tex}24{/tex} was misread as {tex} 42 . {/tex} The corrected mean is:

14.2

14.8

14

14.6

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Q 3. The mean weight of {tex}9{/tex} girls in a group is {tex} 45 \mathrm { kg } {/tex}. The individual weights of eight of them are {tex} 51 \mathrm { kg } , 45 \mathrm { kg } {/tex}, {tex} 45 \mathrm { kg } , 46 \mathrm { kg } , 50 \mathrm { kg } , 52 \mathrm { kg } , 55 \mathrm { kg } {/tex} and {tex} 44 \mathrm { kg } {/tex}. The weight of the {tex} 9 ^ { \text {th } } {/tex} girls is:

{tex} 52 \mathrm { kg } {/tex}

{tex} 52.8 \mathrm { kg } {/tex}

{tex} 53 \mathrm { kg } {/tex}

{tex} 17 \mathrm { kg } {/tex}

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Q 4. Which of the following is not a measure of central tendency.

Mean

Median

Mode

Range

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