Question

Find the mode of the following data
Frequency
Class interval
1-3
6
3 - S
q
5-7
IS
9
7-9
9-11​

Answer 1

Answer:

Step-by-step explanation:

Class intervals                       Frequency

   10-20                                       7

   20-30                                     12

   30-40                                     20

   40-50                                      11

  50-60                                        8

Here maximum frequency is 20 ,the class corresponding to this 30-40

So modal class is 30-40

Now lower limit of modal class (l)=30

Frequency (f1) of modal class =20

frequency (f0) of preceding the modal class  =12

frequency (f2) of the class succeeding the modal class=11

Class size=10    

Mod=l+[  

2f1−f0−f2

f1−f0

​  

]×h

Mod =30+[  

2×20−12−11

20−12

​  

]×10=30+  

17

8

​  

×10=30+4.705=34.705      

DO IN THIS METHOD MARK ME AS BRAINLIEST