Q23 of 145 Page 410

For a symmetrical frequency distribution, we have

As in a symmetrical frequency distribution, the left and right hand side of the distribution is roughly equally balanced around the mean of the distribution.

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21

The mean and mode of a frequency distribution are 28 and 16 respectively. The median is

 22

The median and mode of a frequency distribution are 26 and 29 respectively. Then, the mean is

 24

Look at the cumulative frequency distribution table given below:































Monthly income



Number of families



More than Rs. 10000



100



More than Rs. 14000



85



More than Rs. 18000



69



More than Rs.20000



50



More than Rs. 25000



37



More than Rs. 30000



15



Number of families having income range 20000 to 25000 is

 25

The median of first 8 prime numbers is