The Ages of 25 Salespersons in an Organisation Are Given

Essay

The ages of 25 salespersons in an organisation are given below. $$\begin{array} { | l | l | l | l | l | l | l | l | l | l | } \hline 47 & 21 & 37 & 53 & 28 & 40 & 30 & 32 & 34 & 26 \\\hline 34 & 24 & 24 & 35 & 45 & 38 & 35 & 28 & 43 & 45 \\\hline 30 & 45 & 31 & 41 & 56 & & & & & \\\hline\end{array}$$ Construct an ogive for the data, and estimate the proportion of salespersons that are:
a. less than 30 years of age.
b. more than 40 years of age.
c. between 40 and 50 years of age.