PDF 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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