Question

Find the mean of the following distribution

FASTEST WILL BE MARKED BRAINLIEST!!!
step by step answer required!

Answer 1

Answer:

Step-by-step explanation:

C.I           F     X            Fx

0-25      2     12.5        25

25-40     3     32.5      97.5

40-55     7     47.5      332.5

55-70     6     62.5       375

70-85     6     77.5       465

85-100    6     92.5      555

       

∑f = 30

∑fx = 1850

Mean = ∑fx / ∑f

          = 1850 / 30

          = 61.6666