Data Validity - Unit 3 Validity of Data When determining...

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Unit 3: Validity of Data When determining the validity of a statistical study, there are many areas that need to be assessed: 1. sources – must be authoritative, reliable, current, unbiased 2. method of data collection – was it done properly, was there a large enough sample, etc. 3. possible sources of bias – was the sample representative, etc 4. analysis of the data – was enough information about the calculations and data given, do the statistics appear to have been calculated correctly, are graphs presented properly 5. conclusions – does the conclusion of the author actually match what the data is saying, did he or she assume cause and effect (and was this an acceptable assumption) Here are some questions to consider: 1.Who conducted the study? Is it a current, reliable source? (Do some quick background information if it doesn’t indicate in the article).
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