The dot plot is attached to this question with frequency on the y-axis and the test scores on the x-axis.
From the image attached for the dot plot, the dot bar with the highest frequency is the one with a score of 89. Therefore, 89 is the most common score as it has the highest frequency.
The X which is the first number in each () in called the input There is only one input for every number Meaning all the first numbers mystery br DIFFERENT