Topic: Unit 4: Inference for Quantitative Data: Means

How Sample Size Affects Power in a t Test

How Alpha Changes the Conclusion

Evaluating Sample Conclusions as a Grader

Effect of Sample Size on a One-Sample t Test

Defining the Difference Variable

Confidence Intervals From Summary Statistics Versus Raw Data

Computing Two-Sample Degrees of Freedom With the Welch Formula

Comparing Treatments Using Crossover Designs

Common Mistakes in Writing Conclusions

Common Misinterpretations of the P-Value