Solution:
Given the dot plot as shown below:
To evaluate the mean, we write out the data values as seen on the x-axis.
Thus, the data values are:
[tex]2,4,4,4[/tex]
The mean is expressed as
[tex]\frac{sum\text{ of individual values}}{total\text{ number of values}}[/tex]
Thus, the mean number of times Zach's teammates were late to practice last week is evaluated as
[tex]\begin{gathered} \frac{2+4+4+4}{4} \\ =\frac{14}{4} \\ =3.5 \end{gathered}[/tex]
