One Can Reduce the Width of a Confidence Interval by Taking

question 138

True/False

One can reduce the width of a confidence interval by taking a smaller sample size.

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Definitions:

dfWG

Degrees of freedom within groups, a term used in statistical analysis, particularly ANOVA, to indicate the number of independent pieces of information available to estimate variances within the groups.

Degrees of Freedom

A concept in statistics that refers to the number of values in a calculation that are free to vary without violating the constraints of the calculation.

Levels Minus One

In analysis of variance (ANOVA), it refers to the number of levels in a factor minus one, which dictates the number of comparisons that can be made.

Interaction Effect

Occurs in an analysis when the effect of one independent variable on a dependent variable differs across levels of another independent variable.