CHYS 3P15 Lecture Notes - Lecture 5: Analysis Of Variance, High-Occupancy Vehicle Lane, Null Hypothesis

8 views11 pages

erinbutterfly515

7 Jun 2022

School

Brock University

Department

Child and Youth Studies

Course

CHYS 3P15

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

Document Summary

The idea is that you want what you"re studying to explain more than what you"re not studying (focus is on manipulation) The larger the f statistic is the more likely the test will show you how your group differs. The pink (denominator): how much the scores differ between groups. Reminder s squared means variance which is important for this test. The green (numerator): compare the 3 means (the variance between groups) The difference between 2 and 8 is more significant that the difference between the pink. Testing whether coffee, tea, or water can influence reaction time. Smaller between mean variance (green) (because the difference between means is less significant than comparing within groups (pink)) The null hypothesis: mean for should not be different (no difference in reaction time between groups) Do not reject the null in this case. The alternate: mean for t should be significantly different.

Related Questions

Question 4 (1 point)

We want to determine if a difference between groups exists between 3 groups. If we use a t test and an alpha of 0.05, what is the chance that one of the t tests is wrong?

Question 4 options:

45%

No chance

15%

5% (alpha = 0.05)

Question 5 (1 point)

Continuing from question 4, using a t test for more than two groups would increase __________ error.

Question 5 options:

Type I

Type II

Question 6 (4 points)

Match the following: