A news reporter in a city with several carbon-emitting power plants wanted to see whether local temperatures matched trends in global climate change. She
focused on the four coldest months of the year.
The table shows local temperature data from November through February for the two consecutive cold seasons checked by the reporter.
Average Monthly Temperatures (°F)
2011-2012:
November 61 1
December 51 9
January 53.6
February 56.5

2012-2013:

Nov: 64.2
Dec:56 8
Jan;48.3
Feb: 55.1

How did the mean temperature change between the two cold seasons?
You may use the calculator.
OA.
went down by 1.40
OB.
went up by 0.3°
OC.
went up by 0.9°
OD.
went up by 3.70

Question

contestada

Respuesta :

MrRoyal MrRoyal · Answer 1 · 2022-09-14T18:47:39+02:00

The mean temperature change between the two cold seasons is (b) went up by 0.3°

The given parameters are:

2011-2012:

2012-2013:

The mean is calculated as

Mean = Sum/Count

So, we have

2011 - 2012 mean = (61.1 + 51.9 + 53.6 + 56.5)/4

Evaluate

2011 - 2012 mean = 55.8

Also, we have

2012 - 2013 mean = (64.2 + 56.8 + 48.3 + 55.1)/4

Evaluate

2012 - 2013 mean = 56.1

The difference in these mean values are

Difference = 56.1 - 55.8

Evaluate

Difference = 0.3

Hence, the mean temperature change between the two cold seasons is (b) went up by 0.3°