In a longitudinal study on childhood development, some data points are missing randomly due to logistical issues during data collection. How would you classify this missing data?
- MAR
- MCAR
- NMAR
- Not missing data
This would be MCAR (Missing Completely at Random) because the reason for the missing data (logistical issues) has nothing to do with the observed or unobserved data. It's entirely random.
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