A dataset has 1000 records and 30 variables with 5% of the values missing, spread randomly throughout the records and variables. an analyst decides to remove records that have missing values. about how many records would you expect would be removed

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Mathematics

Owen Stein

18 July, 13:33

A dataset has 1000 records and 30 variables with 5% of the values missing, spread randomly throughout the records and variables. an analyst decides to remove records that have missing values. about how many records would you expect would be removed

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Leandro Gardner · Answer 1

The chance that a record would not have any missing variable is (1 - 0.5) ^50,=.077. So out of a 1000 records, only 77 are likely to have all variables, which means we can expect about 923 records to be removed