Simplify the expression (6+2)^2-4×3 using the order of operations((the 2 is an exponent))
2 answers:
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First, find the mean. You'll need it to compute the variance.
The variance of the sample is then computed with the formula
The standard deviation is the square root of the variance, so
The variance of the sample is then computed with the formula
The standard deviation is the square root of the variance, so