Calculate the mean, median and mode data :
x- 0.5 1.0 3.0 5-7 7-10 10- 15 15-20 20-25
f: 2 3 2 4 4 12 6 2
( hint. make equal intervals)
mean = 11.49 ,M = 12.08, z= 12.5
step by step.....
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