18. Determine the mean of each set of numbers. Express your answer to the nearest hundredth, if necessary.
a) 0, -4.5, -8.2, 0.4, -7.6, 3.5, -0.2
To determine the mean, I first add all the numbers together:
0 + -4.5 + -8.2 + 0.4 + -7.6 + 3.5 + -0.2= -16.6
I then divide the sum with how many numbers I used to add it with.
-16.6/7= -2.37
b) 6.3, -2.2, 14.9, -4.8, -5.3, 1.6
6.3 + -2.2 + 14.9 + -4.8 + -5.3 + 1.6= 10.5
10.5/6= 1.75
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