Q16 of 145 Page 410

Mode = ?

Mode is given by,



where,


xk = lower limit of the modal class,


h = class width,


fk = frequency of the modal class,


fk - 1 = frequency of class preceding the modal class


and fk + 1 = frequency of class succeeding the modal class

More from this chapter

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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

 17

Median = ?

 18

If the mean and median of a set of numbers are 8.9 and 9 respectively then the mode will be