TEST 2 STUDY GUIDE

# TEST 2 STUDY GUIDE - Chapter 4 Research Hypothesis H 1...

This preview shows pages 1–2. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 4 Research Hypothesis- H 1 ; predicts a difference between populations; can be directional or non-directional ; μ 1 ≠μ 2 Null Hypothesis- H ; predicts no difference between populations; μ 1 =μ 2 Population Distribution- the amount of people in a certain area Type 1 Error- reject the null hypothesis, but the null hypothesis is true We say μ 1 ≠μ 2 , when actually μ 1 =μ 2 The chance of making a Type 1 error is the same as the level of significance of the test- .05 significance level 5% chance of making an error Alpha Error (α)- p<.05, α<.05 Type 2 Error- we accept the null hypothesis, when the null hypothesis should be rejected We say μ 1 =μ 2 , when actually μ 1 ≠μ 2 Beta Error (β)]- The more lenient the significance level, the smaller the chance for making a beta error Relationship Between Type 1 and Type 2 Error- • If you protect against Type 1 error, chance of Type 2 error increases • If you protect against Type 2 error, chance of Type 1 error increases Protecting against one, increases the chances of the other occuring Directional Hypothesis- when a clear direction is stated (“increase”, “higher”, “lower”); 1 tailed test; μ 1 >μ 2 or μ 1 <μ 2 Non- Directional Hypothesis- mixed theory, no direction prediction; 2 tailed; μ 1 ≠μ 2 Rationale for Hypothesis Testing- we want there to be differences between populations Conventional Levels of Significance- 5% (p<.05) & 1% (p<.01) Chapter 5 Population Distribution vs. Distribution of Means * Individual Scores * Means of groups of individual scores * Used when comparing...
View Full Document

{[ snackBarMessage ]}

### Page1 / 8

TEST 2 STUDY GUIDE - Chapter 4 Research Hypothesis H 1...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online