From 1a0907496a81c174103893ab8d5d731e11df49aa Mon Sep 17 00:00:00 2001 From: zleyyij Date: Thu, 1 Feb 2024 14:19:19 -0700 Subject: [PATCH] vault backup: 2024-02-01 14:19:19 --- education/statistics/Hypothesis Tests.md | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) diff --git a/education/statistics/Hypothesis Tests.md b/education/statistics/Hypothesis Tests.md index 4e6d9ac..bd5e49a 100644 --- a/education/statistics/Hypothesis Tests.md +++ b/education/statistics/Hypothesis Tests.md @@ -6,13 +6,14 @@ This test can be used if: - Can use a box with tickets of 1s and zeros to represent the population If an observed value is too many SEs away from the expected value, it is hard to explain by chance. ### Null Hypotheses -A statement about a parameter, a statement of equality. The chance of getting an *x* is *y*%. -An alternative hypothesis, or a research hypotheses, is what the researcher is out to prove. A statement of inequality (<, >, $\ne$). - | Term | Description | | ---- | ---- | | Null Hypothesis | This is a statement about a *parameter* | -| Alternative/Research Hypothesis | | +| Alternative/Research Hypothesis | What the researcher is out to prove, a statement of inequality. (Less than, greater than, not equal to). | | One-tailed test | Use when the alternative hypothesis says that the % of 1s is less than or greater than expected. It's one sided | - - ## c tests for averages +| Two tailed test | When something is not equal to the expected. | + +## P Value +The chance of observing at least a sample statistic, or something more extreme, if the null hypothesis is true. +If the p-value is less than 5%, reject the null hypothesis. +If the p-value is greater than 5%, fail to reject the null hypothesis.