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Betsy Is a Psychologist Who Is Recording the Frequency of a Child's

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Betsy is a psychologist who is recording the frequency of a child's inattention and out-of-seat behavior.She is using a technique known as situational testing.


Definitions:

Stratified Random Sampling

A method of sampling that involves dividing a population into smaller groups, known as strata, that share similar characteristics, and then randomly selecting members from each stratum for study.

Chi-Square Distribution

A statistical distribution used in hypothesis testing that is applicable to variables measured on an interval scale, often used to analyze categorical data.

T-Distributions

A type of probability distribution that is symmetric and bell-shaped, used in hypothesis testing, especially when the sample size is small or the population variance is unknown.

Confidence Interval

A sequence of numerical figures, extracted from sampling data, likely to hold the value of an unobserved population parameter.

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