Research Methods

A confidence interval estimates a range of values likely to contain a population parameter, reflecting uncertainty in measurements.

A statistical measure that describes the strength and direction of a relationship between two variables.

Factor Analysis is a statistical method used to identify underlying relationships between variables.

Frequentist inference is a statistical approach that evaluates the probability of data under fixed parameter values.

Judgment Sampling is a non-probability sampling method based on the researcher's expertise.

The Kappa Coefficient measures inter-rater agreement for categorical items.

A measure of inter-rater agreement for categorical items, correcting for chance agreement.