Q. Select the outlier in the data set.9,68,72,78,80,89,91,99
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.Data set: 9,68,72,78,80,89,91,99
Observe Data Set: By observing the data set, we can see that the number 9 is much smaller than all the other numbers, which are all above 60. This suggests that 9 could be the outlier.
Calculate Range: To confirm that 9 is the outlier, we can calculate the range and see if 9 falls far outside the typical spread of the data. The range is the difference between the largest and smallest numbers in the set.Range = Largest number - Smallest numberRange = 99−9Range = 90
Confirm Outlier: Now that we have the range, we can see that 9 is significantly lower than the smallest number in the main cluster of data (68). This confirms that 9 is indeed the outlier.