Question

each data set contains one outlier. what are the values of the two outliers? explain how each value is determined

Explanation:

Step1: Identify outliers visually

Outliers are data - points that are far from other data - points. In the dot - plots, for the 9th grade data, the values that are far from the main cluster of data points are considered outliers.

Step2: Determine outlier values

In the first 9th grade dot - plot, the value 10 is far from the main cluster of data points which are mostly in the 50 - 100 range. In the second 9th grade dot - plot, the value 70 is far from the main cluster of data points which are mostly in the 20 - 50 range.

Answer:

The two outliers are 10 and 70. The value 10 in the first 9th grade data set is much lower than the rest of the data values which cluster around 50 - 100. The value 70 in the second 9th grade data set is much higher than the rest of the data values which cluster around 20 - 50.