PSY 161 Unit 2 Review

Which statistical notation do we use if an effect was detected?

Given a sample mean, a population mean, and a population standard deviation, which of the following could I use?

Inferential statistics are procedures for drawing conclusions from ________ data and applying that to a(n) ________.

Degrees of freedom are the number of scores in a sample that are independent and free to vary.

Random sampling is when all events or individuals have a(n) ________ chance of being selceted

When comparing two sample means with different groups, I can use an independent samples t-test to test an effect.

What is a percentile rank?

If an obtained statistic lands in the region of rejection/critical region, we accept the null.

Probability is defined as ___/n.

Sampling error is a natural discrepancy b/w a sample statistic & its corresponding population parameter.

A two-tailed test has a predicted direction.

A type I error occurs when rejecting a null hypothesis that is actually true.