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i)Find the range of observations, r.
Range=maximum value-minimum value
ii)Decide on the convenient number of classes(k) where k is less or equal to 5 but less than 20.
iii)Compute the class interval, i, that is range divided by number of classes.
iv)Each interval has an upper and lower limit. The lower limit must be chosen so as to include the smallest observations.
v)Tally the number of observations that fall in each class.
Hildah Wafula answered the question on April 1, 2019 at 13:53