Question

Find the mean of the following distribution Height (in cm) Less than 75 Less than 100 Less than 125 Less than 150 Less than 175 Less than 200 Less than 225 Less than 250 Less than 275 Less than 303 No. of students 5 11 14 18 21 28 33 37 50

Answer 1

Step-by-step explanation:

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Height No. of students fi xi di=xi-A where A=187.5 ui=di/h where h=25 fiui

50-75 5 62.5 -125 -5 -25

75-100 6 87.5 -100 -4 -24

100-125 3 112.5 -75 -3 -9

125-150 4 137.5 -50 -2 -8

150-175 3 162.5 -25 -1 -3

175-200 7 187.5 0 0 0

200-225 5 212.5 25 1 5

225-250 4 237.5 50 2 8

250-275 6 262.5 75 3 18

275-300 7 287.5 100 4 28

N=50 ∑fiui=−10Mean=A+h{1N∑fiui}=187.5+25{−1050}=182.5

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Answer 2

Answer:

mean =182.5

Step-by-step explanation:

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