Question

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?

Answer 1

See explanation.

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`