Question

Consider the following frequency distribution of heights of 60 students of a
class
height (in cm)------no. of student

150 -155----15
155 - 160-------13
160 - 165-------10
165-170---------8
170 - 175---------9
175 - 180--------5

The sum of the lower limit of the modal class and the upper limit of the median
class is :
a) 310
b) 315
c) 320
d) 330
​

Answer 1

Answer:

I think 320 is the answer

Answer 2

Answer:

310.

Step-by-step explanation:

Since 15 is the highest frequency, modal class is 150-155.

And for median class you need to work a little.

Cumulating the frequencies, we get 15, 28, 38, 46, 55, 60.

Sum of frequencies is 60. We need to take the half of that (30) and locate that number in cumulative frequency list. If it does not exist in the list, take the value just less than 30, which is 28. Corresponding class is 155-160.

I hope you can proceed with the required operation. The answer should be 310.