What is the mean of the height of buidings in feet:
8 , 12 , 6 , 8, 12 , 18 , 11, 20 , 8
The mean of the height of buildings in feet is:
(8 + 12 + 6 + 8 + 12 + 18 + 11 + 20 + 8) / 9 = 11 feet.
To find the mean (average) of the heights of the buildings, you need to add up all the heights and then divide the sum by the total number of buildings.
Step 1: Add up all the heights.
8 + 12 + 6 + 8 + 12 + 18 + 11 + 20 + 8 = 103
Step 2: Count the number of buildings.
There are 9 buildings in total.
Step 3: Divide the sum of the heights by the number of buildings to find the mean.
Mean = Sum of heights / Number of buildings = 103 / 9 = 11.44 (rounded to two decimal places)
Therefore, the mean height of the buildings is 11.44 feet.