UNDERSTANDING RESEARCH RESULTS: STATISTICAL INFERENCE

UNDERSTANDING RESEARCH RESULTS: STATISTICAL INFERENCE

A FEW TERMS

A FEW TERMS

SAMPLES AND POPULATIONS

9 Inferential statistics are necessary because 9The results of a given study are based on data obtained from a single sample of researcher participants and 9Data are not based on an entire population of scores

9 Allows conclusions on the basis of sample data

INFERENTIAL STATISTICS

9 Allow researchers to make inferences about the true differences in populations of scores based on a sample of data from that population

9 Allows that the difference between sample means reflects random error rather than a real difference

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