Question

Find the mean of the following data:
Class interval Frequency
1.)0 - 20----------> 5
2.)20 - 40-------->10
3.)40 - 60-------->20
4.)60 - 80-------->12
5.)80 - 100------->3
plz solve thus question in all the three method
who will be the first I will mark them as branilist.... hurry up
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Answer 1

Answer:

Image will help you and if you face any doubt you can comment me-

Answer 2

Answer:

please give me 20 thanks and take 30 thanks