Q13 of 145 Page 410

If the 'less than type' ogive and 'more than type' ogive intersect each other at (20.5, 15.5) then the median of the given data is

If ‘less than type’ ogive and ‘more than type’ ogive intersect each other at (20.5,15.5), then median of the given data is 20.5 as median in this kind of graph is found on x - axis, which represents class intervals (upper limit/lower limit).

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11

While computing the mean of the grouped data, we Assume that the frequencies are

 12

The relation between mean, mode and median is

 14

Consider the frequency distribution of the heights of 60 students of a class:






































Height (in cm)



No of Students



Cumulative Frequency



150 - 155



16



16



155 - 160



12



28



160 - 165



9



37



165 - 170



7



44



170 - 175



10



54



175 - 180



6



60



The Sum of the lower limit of the modal class and the upper limit of the median class is

 15

Consider the following frequency distribution:





















Class



0 - 10



10 - 20



20 - 30



30 - 40



40 - 50



50 - 60



Frequency



3



9



15



30



18



5



The modal class is