The Ages of 25 Salespersons in an Organisation Are Given

question 23

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.

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Definitions:

F Statistic

A value calculated in the ANOVA test to determine if the means between two or more groups are significantly different.

Null Hypothesis

A statement or assumption that indicates no effect or no difference, which the statistical test aims to reject.

Interaction

In statistics and research, it refers to a situation where the effect of one independent variable on the dependent variable differs depending on the level of another independent variable.

Profile Plot

A graphical representation of the multivariate data where each observation is represented by a plot, often used to observe patterns over time or conditions.