A New Instrument Has Been Determined to Be Highly Valid

question 7

Multiple Choice

A new instrument has been determined to be highly valid. The nurse researcher should interpret this finding to mean what?

• A) It is sensitive but not specific.
• B) Its use results in minimal random errors.
• C) It accurately measures level of mentation.
• D) Determination of interrater reliability is unnecessary.

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Definitions:

Indicator Variables

Variables used in statistical models to represent subgroups with values typically set to 0 or 1, indicating the absence or presence of a characteristic.

Nominal Variable

A type of variable that represents categories with no intrinsic ranking or order.

Stepwise Regression

A method of regression analysis in which variables are added or removed from a multivariable model in a step-by-step fashion based on statistical criteria.

F-statistic

A ratio used in statistical analysis to compare the variance across different groups to evaluate the significance of relationships between variables in a linear model.