Why Should You Perform Bivariate and Multivariate Analyses of the Items

question 12

Multiple Choice

Why should you perform bivariate and multivariate analyses of the items in your index?

• A)to make them longer
• B)to help you develop new items
• C)to see how they correspond to each other to decide which ones should be included
• D)to see how they differ from each other to make sure you include different items
• E)your results would be invalid otherwise

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Definitions:

Specification Limits

Pre-determined bounds that define the acceptable range of variation for a product's characteristics or a process's outputs.

Standard Deviation

A measure of the amount of variation or dispersion of a set of values, indicating how spread out the values are from the average.

Sigma Control Limits

Statistical boundaries set in process control that indicate whether a process is in a state of control or needs adjustment, based on the standard deviation (σ) of the process data.

Standard Deviation

A statistical measure that quantifies the dispersion or variability of a set of data points around the mean, indicating how spread out the data points are.