The 6:00 a.m. temperatures for four consecutive days in the town of Lincoln were -12.1 C, -7.8 C, -14.3 C, and 7.2 °C. What was the average 6:00 am temperature for the four days?

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Answer 1 · 2016-11-18T08:54:56

See explanation.

To calculate the average (mean) value of a set of numbers you have to add all the numbers and divide the sum by the number of measured values.

#bar(x)=(x_1+x_2+...+x_n)/n#

Here we have:

n=4

#bar(x)=(-12.1+(-7.8)+(-14.3)+7.2)/4#

#bar(x)=-27/4#

#bar(x)=-6.75#

Answer: The average temperature is #bar(x)=-6.75#