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Uses for Descriptive Statistical Processes in Research Questions

Can descriptive statistical processes be used in determining relationships, differences, and/or effects in the research question and testable null hypothesis (as stated below)? I think that includes mean, median, mode, etc.

Research question: What is the relationship between socioeconomic levels and child abuse?

Null hypothesis: There is no relationship between socioeconomic levels and child abuse.

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When we look for a correlation, we do make some use of mean scores - we start with a calculation that includes a look at how the score of each individual on each variable differs from the mean score on that variable. However, the true thing we're interested in with correlation is how changes in ...

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This solution discusses uses for descriptive statistical processes in research questions. The text contains 193 words.