Question

Give answer of this question ​

Answer 1

Answer:

Mode = 3.571

Mean direct method = 2964.133

Step-by-step explanation:

CI. F XI ( UL +LL /2) FIXI

5-15 6 10 60

15-25 11 20 220

25-35 21 30 630

35-45 23 40 920

45-55 14 50 700

h = UL( upper limit) - LL ( lower limit)

15-5 = 10

Total Fi = 75 Total FIXI = 222310

Mean direct method = zigma FIXI / Fi

222310/75 = 2964.133

Therefore mean is 2964.133

Mode =

F0 ( the observation above the most occurring observation) = 15

F1 ( most occurring observation) = 20

F2 ( the observation below the most occurring observation) = 11

H = UL - LL

10-0 = 10

Mode = (f1-f0/2f1-f0-f2) *h

(20-15/2(20)-15-11)*10

(5/14)*10 ( 14 and 10 can be simplified in 2 table leaving 7 and 5)

25/7 = 3.571

Therefore mode = 3.571

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