When Data Are Normally Distributed, Approximately of the Values Are

question 151

Short Answer

When data are normally distributed, approximately of the values are within 1 standard
deviation of the mean, approximately are within 2 standard deviations of the mean, and
approximately are within 3 standard deviations of the mean.

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Definitions:

Spearman's Rank

A non-parametric method used to measure the strength and direction of the association between two ranked variables.

Ordinal

A type of qualitative data that represents categories with a meaningful order or ranking, but without a precise mathematical difference between them.

Mediating Variable

A variable that helps explain the relationship between the independent and dependent variables, acting as an intermediary in the cause-effect relation.