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
Reading dot plots & frequency tables - Questions
1. The following dot plot shows the number of cavities for each patient seen by Dr. Hall last week. Each dot represents a different patient.
What was the minimum number of cavities that a patient had?
_____ cavities
2. The following frequency table shows the number of strokes it took each golfer to complete Hole \(3 .\)
\(
\begin{array}{cc}
\text { Number of strokes } & \text { Number of golfers } \\
\hline 1 & 0 \\
\hline 2 & 4 \\
\hline 3 & 14 \\
\hline 4 & 10 \\
\hline 5 & 4 \\
\hline 6 & 2 \\
\hline
\end{array}
\)
What was the most frequent number of strokes?
______ strokes
3. The following dot plot shows the height of each toddler at Ms. Cabrera's daycare. Each dot represents a different toddler.
How many toddlers are in Ms. Cabrera's daycare?
______ toddlers
4. The following frequency table shows the number of Jui's pictures that have been published in each of the local magazines.
\(
\begin{array}{cc}
\text { Number of pictures } & \text { Number of magazines } \\
\hline 0 & 2 \\
\hline 1 & 1 \\
\hline 2 & 3 \\
\hline 3 & 2 \\
\hline 4 & 1 \\
\hline
\end{array}
\)
What is the most frequent number of pictures?
______ pictures