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AP Computer Science Principles/Big Idea 2: Data
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Identifying Missing Completely At Random Data
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Which of the following represents a valid approach to determine if incomplete data in a dataset is Missing Completely At Random (MCAR)?

A

Compare distributions between complete and incomplete cases

B

Assume all missing data follows the same pattern

C

Check if the dataset size exceeds 1000 records

D

Verify that exactly 5% of values are missing

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