If the mean of the following frequency distribution is 8 find value for p x/y=3/8 5/8 7/15 9/p 11/8 13/4
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Answer:
Multiply all the numbers under x and y , you will get
xy=24 40 105 9p 88 52
Add all the numbers under y , you will get
43+p
Add all the numbers under xy , you will get
309+9p
Mean = xy/y=8
= 309+9p/43+p=8
309+9p=8(43+p)
309+9p=344+8p
9p-8p=344-309
Therefore, p= 35
Thanks
Sorry if any calculating mistakes
neha6147:
why you have written thanks
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