setting up a test

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4 Terms

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What do NHSTs both have?

  • A type

  • A direction

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Type

  • One sample: Used when we want to test a single group

  • Two sample: Used when we want to compare two groups. They can be either independent or paired:

    • Independent samples: Different people in each group (ex. comparing grades in KN 200 from Fall 2023 to Fall 2024)

    • Paired samples: Same people in each group (ex. comparing pre-test and post-test grades in KN 200 from this semester)

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Direction

  • One-sided (we specify HA as being either greater than H0 or less than H0)

  • Two-sided (we specify HA as being different from H0—It could be less, or it could be more. We want to know if there’s a difference.

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