find the value of P if the mean of the given data is 15.45
class 0-6 6-12
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Step-by-step explanation:
xi. fi. xifi
3. 6. 18
9. 8 72
15. p. 15p
21 9. 189
27 7. 189
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30+p. 468+15p
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x = sigma xifi / sigma fi
15.45 = 468+15p / 30 + p
15.45(30+p) = 468+15p
463.5 + 15.45p = 468 + 15p
15.45 p - 15p = 468 - 463.5
0.45 p = 4.5
p = 450/ 45
p = 10
Answered by
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Answer:
P = 10
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