ap stats study guides

โœŒ๏ธย  Unit 2 - Exploring Two-Variable Data

โš–๏ธย  Unit 6 - Inference for Categorical Data: Proportions

๐Ÿ˜ผย  Unit 7 - Inference for Qualitative Data: Means

โœณ๏ธย  Unit 8 Inference for Categorical Data: Chi-Square

๐Ÿ“ˆย  Unit 9 - Inference for Quantitative Data: Slopes

๐Ÿงย  Multiple Choice Questions (MCQs)

5.8 Sampling Distributions for Differences in Sample Means

#exploringdata

#sampling

#experimentation

#anticipatingpatterns

#statisticalinference

โฑ๏ธย ย 1 min read

written by

brianna bukowski

Josh Argo

josh argo

Harrison Burnside

harrison burnside

(editor)


Formulas

To find the standard deviation of differences in sample means, divide the variances by each sample size before square rooting to find the overall standard deviation. Just like with proportions, the โ€œPythagorean Theorem of Statisticsโ€ applies to sampling distributions for the difference in two means as well. Here are the formulas for the needed parameters for sampling distribution of difference of two means.ย ย 

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Source: AP Statistics Formula Sheet

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Source: The AP Statistics CED

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