Stratified Random Sampling Is a Method of Selecting a Sample

question 74

Multiple Choice

Stratified random sampling is a method of selecting a sample in which

• A)the sample is first divided into groups, and then random samples are taken from each group
• B)various strata are selected from the sample
• C)the population is first divided into groups, and then random samples are drawn from each group
• D)None of the alternative answers is correct.

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Definitions:

Sleep Deprivation

A condition resulting from not getting enough sleep, which can affect cognitive performance, mood, and overall health.

Problem-Solving Skills

The ability to find solutions to difficult or complex issues.

Experiment

A research method in which an investigator manipulates one or more factors (independent variables) to observe the effect on some behavior or mental process (the dependent variable). By random assignment of participants, the experimenter aims to control other relevant factors.

Experimentation

The process of conducting tests and trials to explore hypotheses, gather data, or demonstrate principles in controlled conditions.