Which of These Is a Reason Why Researchers Examine Data

question 93

Multiple Choice

Which of these is a reason why researchers examine data by creating tables and figures?

• A) to prove a research hypothesis
• B) to determine whether the population is skewed
• C) to identify the modality of a distribution
• D) to decide whether a variable is measured at the interval or ratio scale

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Definitions:

Critical Value

A point on the scale of the test statistic beyond which we reject the null hypothesis; it defines the boundary for the region of rejection.

Power

The probability that a statistical test will correctly reject a false null hypothesis, effectively detecting an actual effect.

Type II Error

The mistake of failing to reject a false null hypothesis, also known as a "false negative" finding.

Dependent-Samples T-Test

A statistical test used to compare the means of two related groups, indicating if any difference between them is statistically significant.