Mathematics

Problem

<br>&emsp;a. The following grouped data relate to the ages (in years) of members in a club:

Age (years)	0–20	20–40	40–60	60–80	80–100
Members	7	9	?	8	6

If the median age is 48 years, find the missing frequency.<br>&emsp;b. Using the frequency obtained in part (i), verify that the median age of the distribution is indeed 48 years.

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