The weather center in Alaska recorded the average temperature for 42 days and prepared the dot plot shown
The weather center in Alaska recorded the average temperature for 42 days and prepared the dot plot shown. What was the mean temperature during that period?
A. 12.4°F
B. 11.3°F
C. 10.7°F
D. 9°F
Homework Answers
ANSWER : B. 11.3 degree F
EXPLANATION:
The mean is the average of the numbers.
It is easy to calculate: add up all the numbers, then divide by how many numbers there are.
In other words it is the sum divided by the count.
In our given dot grid:
The Temperatures recorded are 5,6,7,8,9,10,11,12,13,14,15,16,17,18,and 19.
So the sum of all above temperature is 180
The number of days on which these temp recorded is 16
Therefore, by using above formula for Mean:
Mean Temp = Sum/Count = 180/16=11.25 round off = 11.3
ANSWER: The mean temperature during the period was 11.3 degree F.
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