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Question

Find out mode from the following data:
Class-Interval 0−5 5−10 10−15 15−20 20−25 25−30 30−35 35−40
Frequency 5 7 15 18 16 9 6 3


Solution

Class Interval Frequency (f)  
0 − 5
5 − 10
10 − 15
5
7
15


f0
15 − 20 18 f1
20 − 25
25 − 30
30 − 35
35 − 40
16
9
6
3
f2


 


By inspection, we can say that the modal class is (15 – 20) as it has the highest frequency of 18.
Mode (Z)=l1+f1-f02f1-f0-f2×ior, Z =15+18-15218-15-16×5or, Z=15+336-31×5or, Z=15+3= 18Hence, mode (Z) is 18.

Economics
Sandeep Garg (2019)
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