Problems Involving Mean and Median

This lecture series discusses using mean and median to make inferences about data points and how the small changes in data can affect mean and median. Watch the videos and complete the interactive exercises.

Practice

Missing value given the mean - Questions

1. The following table shows the number of attendees at each of the private dance events hosted by Fenel Arrangements.

\begin{array}{lccc}\text { Event } & \text { Martha's Moonwalk } & \text { Shirly's Shimmy } & \text { Harry's Hoedown } \\\hline \text { Number of attendees } & 48 & 33 & ?\end{array}

If the mean of the data set is 41 attendees, find the number of attendees at Harry's Hoedown.

_______ attendees

2. The following data points represent the number of points scored last basketball game by each player on the Dragons basketball team.

5,8,11,7, ?

If the mean of the data set is 8 points, find the missing number of points.

_______ points

3. The following table shows last year's revenue for each Herman's Hoagies location.

\begin{array}{lc}\hline \text { Location } & \text { Revenue (in thousands of dollars) } \\\hline \text { Cedarton } & 121 \\\hline \text { Rimber } & 189 \\\hline \text { Linton } & 147 \\\hline \text { Granton } & ?\end{array}

If the mean of the data set is 158 thousand dollars, find the revenue for the Granton location.

______ thousand dollars

4. The following data points represent the volume of gas in each race car driver's tank (in liters).

4,5,13, ?

If the mean of the data set is 7 L, find the missing volume of gas.

______ L