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RideAnS [48]
3 years ago
5

Gail bought four snacks that cost $1.00, $1.50, $2.50, and $3.00. What is the average of the deviations from the mean?

Mathematics
2 answers:
faltersainse [42]3 years ago
7 0

For this case we have that the average is given by:

μ = Σx/N

μ=\frac {1 + 1.50 + 2.50 + 3} {4}

μ =\frac {8} {4}

μ = 2

On the other hand, the deviation is given by:

σ = Root(Σ(x-μ)^2/N)

σ= \sqrt {\frac {(1-2) ^ 2 + (1.50-2) ^ 2 + (2.50-2) ^ 2 + (3-2) ^ 2)} {4}}

σ =\sqrt {\frac {2.5} {4}}

σ =\sqrt {0.625}

σ = 0.790569415

ANswer:

μ = 2

σ= 0.790569415

Deffense [45]3 years ago
3 0

The answer for this is 2

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18.   </span>18 + 22 = 40</span> <span><span>
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