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In the event of missing data, there are typically a series of questions that should be asked:

• Determine the reason for the missing data; what is the process that lead to the data being missing?

• Is the proportion of missing values so high as to invalidate any sort of analysis?

• Is there information in the dataset that would allow you to predict/infer the values of the missing data?

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owner: aelizzybeth - (no access) - Exploratory_Data_Analysis_with_R_Peng.pdf, p142


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