Listwise Deletion - Example

Example

For example, consider the following questionnaire, as answered by 10 subjects:

Subject Age Gender Income
1 29 M $40,000
2 45 M $36,000
3 81 M --missing--
4 22 --missing-- $16,000
5 41 M $98,000
6 33 F $60,000
7 22 F $24,000
8 --missing-- F $81,000
9 33 F $55,000
10 45 F $80,000

A researcher hoping to model income (dependent variable) based on age and gender (independent variables). Using listwise deletion, the researcher would remove subjects 3, 4 and 8 from the sample before performing any further analysis.

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