There are various statistical tests which determine the differences between groups or more like anova, t-test, f-test, etc. examples on the other hand of test statistics that examine the relationship of variables includes linear regression which tests the r^2 and correlation.

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3 years ago

Which choice is equivalent to the quotient below when -2<=x<2

Arlecino [84]

The choice which is equivalent to; √(4-x²)/√(2-x) is; √(2-x).

<h3>Which choice is equivalent to the quotient?</h3>

According to the task content, it follows that the expression whose equivalent is to be determined can be evaluated as follows;

√(4-x²)/√(2-x) = √(4-x²)/(2-x)

Hence, the numerator can be evaluated by difference of two squares where;

(4-x²) = (2-x)(2+x)

Hence; we have; √(2-x)(2+x)/(2-x) = √(2-x).

Read more on difference of two squares;