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.