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Assumption

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Intro to Statistics

Definition

An assumption is a condition that is accepted as true without proof, forming the basis for further reasoning and analysis. In statistics, assumptions are crucial for the validity of hypothesis tests.

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5 Must Know Facts For Your Next Test

  1. Assumptions are necessary to derive valid statistical inferences from sample data.
  2. Common assumptions include normality, independence, and equal variances among groups.
  3. Violating assumptions can lead to incorrect conclusions and invalid test results.
  4. Statistical tests like the Shapiro-Wilk test can be used to check for normality.
  5. Knowing when an assumption holds or fails helps in choosing appropriate statistical methods.

Review Questions

  • What are common assumptions made in hypothesis testing?
  • How does violating an assumption affect the outcome of a statistical test?
  • Which tests can be used to verify the normality assumption?
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