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Self-help groups can be reassuring and supportive in ways that family, friends, and psychotherapists sometimes may not be able to be.
Ordinal
A scale of measurement where numbers represent ordered categories that have a meaningful sequence, but the intervals between the categories are not necessarily equal.
Ratio Scales
Ratio scales are a type of measurement scale that not only have order and equal intervals but also have a true zero point, allowing for the calculation of ratios.
"True" Zero
A point on a scale of measurement that represents a complete absence of the property being measured, as opposed to a mere baseline or reference point.
NOIR
A commonly used acronym in statistics that stands for Nominal, Ordinal, Interval, and Ratio - the four levels of measurement for variables.
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