Examlex
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.
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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