Question

find the after finding the mean and median would you say of the following data has an outlier? 12, 14, 18, 13, 22, 25, 99
o idk
o just give me a 50%
o yes
o no

Explanation:

Step1: Arrange data in ascending order

$12, 13, 14, 18, 22, 25, 99$

Step2: Calculate the median

Since there are 7 data - points (odd number), the median is the 4th value. So, median $= 18$.

Step3: Calculate the mean

Mean $=\frac{12 + 13+14 + 18+22+25+99}{7}=\frac{203}{7}=29$.

Step4: Analyze for outlier

The value 99 is much larger than the other values in the data - set. The mean (29) is pulled up by the value 99, and there is a large gap between 99 and the other values. So, the data has an outlier.

Answer:

C. yes