(18 + 18 + 11 + 7 + 6 + 11 + 10 + 20 + 7)/9
= 12
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The mean, also often called the "average", is
1/9 of (18 + 18 + 11 + 7 + 6 + 11 + 10 + 20 + 7)
-20, -17, -12, -11, 6, 7, 8, 10, 11, 16, 17, 18, 20
20/18 = 10/9 = 11/9
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20
18
what is the mode of the following data 18, 17, 12, 14, 8, 21, 10, 11, 19, 20, 10, 5, 17, 12, 10, 20
(11+7+20+2+10)/5 = 50/5 = 10
First, to find median put numbers in order so: 5, 5, 6, 7, 8, 9, 10, ( 10, 12 ,) 14, 15, 17, 18, 18, 18, 20 10 + 12= 22 divided by 2= 11, the median is 11
10, 11, 12, 13, 14, 15, 16, 17, 18, 19, and 20
18/20 = 9/10
The median of {10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20] is the 6th values which is 15.
There are 11 possible weights between 10 and 20 pounds (excluding 10 and 20). These weights are 11, 12, 13, 14, 15, 16, 17, 18, and 19 pounds.
9/10 of 20 = 18