Q. Select the outlier in the data set.3,80,82,83,84,85,87,89,95
Identify Outlier: To identify the outlier in the data set, we first need to look at the numbers and see if there is one that stands out as being much different from the others.Looking at the data set: 3,80,82,83,84,85,87,89,95, we can see that the number 3 is much smaller than all the other numbers, which are all 80 or higher.
Confirm Outlier: To confirm that 3 is an outlier, we can calculate the mean and standard deviation of the data set and then determine if 3 falls far outside the range of the other values. However, in this case, since 3 is significantly lower than all other values which are closely grouped together, it is clear that 3 is the outlier without further calculations.