The mean is the average, add the numbers together and divide by the number of students asked:
Mean = 4 + 15 + 19+ 11 + 6 + 16 + 9 + 15 = 95/8 = 11.875 rounded to the nearest tenth = 11.9
Median is the middle value, list the numbers from smallest to largest:
4, 6, 9, 11, 15, 15, 16, 19
There ia an even number, so find the middle two numbers, add them together and divide by 2:
Median = 11 + 15 = 26 / 2 = 13
Solution:
Let
X = height of Cody on the first day of school last year
Given:
Y= height of Cody on the first day of school year = 165 cm
10%(X)+X=Y
.10(X)+X=165
1.10X=165
X=165/1.1
<span>X=
150 cm = height of Cody on the first day of school last year</span>
It is 9 because I think It is equaltion to 9