Lecture 102 - Confidence Intervals

Question 1

Non-parametric tests compare the _____ of results between groups, and there’s no need to describe parameters like mean or variability. These tests tell you whether the advantage in results lies with one group or the other. A rank sum test is one such test.

Answer 1

Rank (which result is best, next best, and so on)

Question 2

Standard error =

Answer 2

Standard error = standard dev of sample means

sqare root (n)

Question 3

Which mean and measure of variance do you use for popluations vs samples?

Answer 3

Population mean and Stand dev for Populations

Sample mean and Standard error for Samples