Frequency Tables and Dot Plots
Sometimes it is helpful to know how many times a given data point occurs in the set of numbers. This is easy to find out if the data is organized in a frequency table or a dot plot. Watch the video and complete the corresponding interactive exercises.
Practice
Creating dot plots - Questions
1. The frequency table below shows how many hours Kim worked each weekend since she started her new job.
\(
\begin{array}{cc}
\hline \text { Number of hours } & \text { Number of weekends } \\
\hline 8 & 1 \\
\hline 9 & 3 \\
\hline 10 & 2 \\
\hline 11 & 1 \\
\hline
\end{array}
\)
Using this data, create a dot plot where each dot represents a weekend.
2. Hugo competes in fishing tournaments. The following data points represent how many fish he caught in each tournament.
\(27,27,28,28,25,26,27\)
Using this data, create a dot plot where each dot represents a tournament.
3. The frequency table below shows the number of trick-or-treaters at Cam's house each year since he started putting pumpkins in his yard.
\(
\begin{array}{cc}
\hline \text { Number of trick-or-treaters } & \text { Number of years } \\
\hline 53 & 1 \\
\hline 54 & 2 \\
\hline 55 & 1 \\
\hline 56 & 2 \\
\hline
\end{array}
\)
Using this data, create a dot plot where each dot represents a year.
4. The following data points represent the number of losses the Minnesota Igloos have had each season.
\(10,9,12,10,11,12,11\)
Using this data, create a dot plot where each dot represents a season.
