Question

the mean of the following distribution is 24.find the value of p;0-10,10-20,20-30,30-40,40-50,50-60.frequency is 15,20,35,p,10,42.find p
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Answer 1

Answer:

solⁿ

---           f        x         fx

0-10       15       5        75

10-20      20     15        300

20-30      35     25       875

30-40      p       35        35p

40-50     10       45        450

50-60      42      55        2310

               ____               _____

                N=122+p         ∑fx=4010+35p

mean=24

∑fx/N=24

4010+35p/122+p=24

4010+35p=2928+24p

35p-24p=2928-4010

11p=-1082

p=-1082/11

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