Draw a cumulative frequency polygon, Applied Statistics

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The following data give the repair costs (in RM) for 30 randomly selected cars from a list of cars involved in collisions.

2026_Draw a cumulative frequency polygon.png

a)  By using RM 1 as the lower limit of the first class and RM 1400 as the width of each class, construct a frequency distribution table.

b)  Compute the cumulative frequency.

c)  Draw a cumulative frequency polygon of the type "less than or equal".

d)  From your graph in c), estimate the following:

(i)  median

(ii)  first quartile

(iii)  third quartile

(iv)  inter quartile range


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