Question: 1) A study is observational when the researcher lets things happen naturally. True False Q2) When the sample is selected by breaking the sample up

1) A study is observational when the researcher lets things happen naturally. True False Q2) When the sample is selected by breaking the sample up into groups based on a preexisting quality and samples from each of the existing groups what type of sampling is being done? Simple Random Convienence Systematic Cluster Stratified Q3) When the sample is selected by treating the population of interest like one big group and everyone has an equal chance of being selected, what type of sampling is being done? Simple Random Cluster Stratified Convienence Systematic

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