Question

Find the mean of the following data .class interval =11-13to23-25. frequency= 7,6,9,13,f,5,4.​

Answer 1

Answer:

hello this is your answer

Step-by-step explanation:

Answer 2

Answer:

Class Intervals- 11-13 13-15 15-17 17-19 19-21 21-23 23-25

fi Frequency-       7        6       9      13       f        5        4

xi(class mark)-    12       14       16     18     20     22       24

fixi=                     84       84     144   234  20f    110       96

∑fixi= 752 + 20f

Mean= ∑fixi/∑fi

         =752+20f/44+f

752+20f/44+f= mean

You can find the mean or the value of f from this equation. In the question you have asked you have not mentioned the value of either of the two. So we can't find the mean. At least one of them should be mentioned in the question.