SOLUTION: The high temperatures at the school were recorded every day last week as: 72, 78, 61, 48, 59, 76, 65. What is the variance (rounded to the nearest whole number) for the high temper
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-> SOLUTION: The high temperatures at the school were recorded every day last week as: 72, 78, 61, 48, 59, 76, 65. What is the variance (rounded to the nearest whole number) for the high temper
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Question 1082856: The high temperatures at the school were recorded every day last week as: 72, 78, 61, 48, 59, 76, 65. What is the variance (rounded to the nearest whole number) for the high temperature last week?
A) 110
B) 113
C) 114
D) 115 Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! mean is the sum over 7 or 459/7=65.57
variance is sum of squares of the differences
6.43^2
12.43^2
4.57^2
17.57^2
6.57^2
10.43^2
0.57^2
all added together and divided by 6.
the result is 112.95 or 113 will be the answer
B
Alternatively, put the values into a list and do 1-variable stats STAT+CALC+1, and get 1-variable stats. Look at s, the sd, and square it to get the variance.
