The dot plot shows the number of pencils students have in their pencil cases. The number line represents the number of pencils. Each X above the number line represents a student who has that number of pencils. Use the dot plot to answer each question.
The figure shows a dot plot for Number of Pencils in a Student's Pencil Case. A portion of number line is shown from 0 to 12 and is labeled as Number of Pencils. 2 crosses are made above the number 0, 3 crosses are made above the number 1, 5 crosses are made above the number 2, 4 crosses are made above the number 3, 2 crosses are made above the number 4, and 1 cross is made above the number 8.
What do the 5 Xs above the number 2 represent?
Why are there no Xs over the number 5?
Identify any outliers. Explain what that means in terms of the number of pencils in pencil cases.
1. The 5 Xs above the number 2 represent 5 students who have 2 pencils in their pencil cases.
2. There are no Xs over the number 5 because no students have 5 pencils in their pencil cases.
3. There are no outliers in this dot plot. An outlier is a data point that is significantly different from other data points in the dataset. In this case, all the data points, represented by the Xs, cluster around the middle of the plot, with only one student having 8 pencils which is still within the range of values. Therefore, in terms of the number of pencils in pencil cases, there are no extreme or unusual cases.