Question

Alex was finding the average change of his stocks over the following months: -10.29 in June, -8.16 in July, +34.50 in August, +3.12 in September. Estimate the average change in his stocks by rounding first to the nearest whole number and then dividing by the number of months.

A. increase of 5
B. decrease of 5
C. increase of 4
D. decrease of 4

Answer 1

To find the average, just add them all together and divide by the number of things you added:

(-10.29) + (-8.16) + (34.50) + (3.12)

= -10.29 - 8.16 + 34.50 + 3.12

= 19.17

now divide it by 4, because you added 4 things:

(19.17) / (4) = 4.7925 = 4.80

so about an a 5$ increase.

Answer 2

thank you