PSY 245 Lecture Notes - Lecture 10: Confidence Interval, Sampling Distribution, Effect Size

• School: West Chester University
• Department: Psychology
• Course: PSY 245
• Professor: Mc Kibben

Document Summary

The probability that we correctly reject the null. Amount that two populations do not overlap. Increase size of effect - larger mean differences. Sampling distribution of means the same group. The sampling distribution of means is another type of probability distribution. Characteristics of the sampling distribution of means. A range of values that we can be confident contain the true value of the population mean. If we obtain many samples and construct confidence intervals for each of them, 95% of the confidence intervals will contain the population mean. We can be 95% confident that our interval contains the population mean.