1.Find the missing frequency f, if the mode of the given data is 154.

Classes

120-130

130-140

140-150

150-160

160-170

170-180

Frequency

2

8

12

f

9

7

plzz give an answer fast....

 

Classes120-130130-140140-150150-160160-170170-180
Frequency2812f97

 

 

The mode for a continuos frequency distribution can be calculated using the formula,

Here, l = Lower limit of the modal class

f = Frequency of the modal class

h = Width of the modal class

 = Frequency of the class preceding the modal class

 = Frequency of the class following the modal class

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