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Can i use Likert scale data for paired sample t-test?

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Discussion thread: Poverty, Social Disadvantage, and Social Protection
Mantee
15 October 2019
Can i use Likert scale data for paired sample t-test?

Hi, can anyone tell me if I can use the paired sample t-test to analyze the Likert scale data? I used the retrospective survey to obtain the data (pre and post) on respondents in various statements.Thanks!

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Jason Jiang
21 February 2020

Yes

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Hobbs
11 February 2020

Thank you Dr MEL!

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Dr. MEL
29 October 2019

The validity of the test depends on the normal distribution of the test data only. Any numerical data showing the normal distribution is suitable for the t-test. When the data deviate greatly from the normal distribution, the sign test is be useful. Nevertheless, normal distribution usually happens to any rating scale.

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