Regarding the Interchangeability of Subqueries and Joins,________

question 102

Multiple Choice

Regarding the interchangeability of subqueries and joins,________.

• A)a join can always be used as an alternative to a subquery,and a subquery can always be used as an alternative to a join
• B)a join can sometimes be used as an alternative to a subquery,and a subquery can sometimes be used as an alternative to a join
• C)a join can always be used as an alternative to a subquery,and a subquery can sometimes be used as an alternative to a join
• D)a join can sometimes be used as an alternative to a subquery,and a subquery can always be used as an alternative to a join

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Definitions:

P > .05

A statistical expression indicating that the probability of the observed data, or something more extreme, if the null hypothesis is true, is greater than 5%.

Null Hypothesis

The default assumption in statistical hypothesis testing that there is no significant effect or difference, intended to be challenged by the alternative hypothesis.

Degrees of Freedom

The number of independent values or quantities that can be assigned to a statistical distribution, which affects the calculation of statistical estimates.

T-test for Dependent Means

A statistical test used to compare the means of two related groups.