Find the Z-Score Corresponding to the Given Value and Use

question 75

Multiple Choice

Find the z-score corresponding to the given value and use the z-score to determine whether the value is unusual. Consider a score to be unusual if it is at least three standard deviations above or Below the mean. Round the z-score to one decimal place, if necessary. A test score of 93.4 on a test having a mean of 73 and a standard deviation of 12.

• A)1.7; not unusual
• B)-1.7; not unusual
• C)1.7; unusual
• D)20.4; unusual

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Definitions:

Factorial ANOVA

A statistical analysis method used to examine the effects of two or more categorical independent variables on one continuous dependent variable, and how their interactions affect the mean of the dependent variable.

Independent Variable

A variable in an experiment that is manipulated to observe its effect on a dependent variable.

Difference Between Levels

The quantitative or qualitative disparity observed between distinct stages or conditions in a variable.

Main Effect

The overall impact of an independent variable on a dependent variable in a factorial design, disregarding interactions.