Question

HELP! The average high temperatures in degrees for a city are listed.

58, 61, 71, 77, 91, 100, 105, 102, 95, 82, 66, 57

If a value of 110.5° is added to the data, how does the mean change and by how much?

The mean increases by 2.3°.
The mean increases by 2.7°.
The means stays at 80.4°.
The mean stays at 82.7°.

Answer 1

Answer down below:

If we do the mean for the first set of numbers, we get a mean of 80.7 (rounded to the tenths place)

If we add the 110.5 to the set, our mean will be 82.96 (rounded to hundredths place)

If we do
82.961538461538 (second mean) minus 2.3 and 2.7 one of these will work

Our answer is the mean increases by 2.3

Math: 82.961538461538 - 2.3 = 80.661538

82.961538461538 - 2.7 = 80.261538