Between subject T-test

Question 1

overview

Answer 1

Different ppt in every condition
-pro: no order effect
-con: less powerful-indiv differences

Question 2

T -Test

Answer 2

How likely are we to obtain the difference between conditions if the null hypothesis is true?
- is variance between conditions larger than within

Question 3

Assumptions-normality Testing

Answer 3

~ Shapiro-wilk Test
- normal distribution =not sig different from normal
- want value to be greater than 0.05

Question 4

one sample T- Test intro

Answer 4

compare data from experiment with 1 single number
did ppts score higher than national avg

Question 5

one sample T-test assumptions

Answer 5

independent data (between subject)
continuous dater (interval traction)
Normally distributed

Question 6

one sample T-test reporting results

Answer 6

the mean spread of ppts was_. The data met assumptions of a one-sample t-test which revealed that _

Question 7

Non parametric alternative for one sample T-Test

Answer 7

• If data violate assumptions
  one sample Wilcoxon signed rank test

Question 8

independent sample T -Test assumptions

Answer 8

independent data
Interval or ratio
N= 12 +
normally distributed
Homogeneity of variance

Question 9

Independent T- Test Homogeneity of variance

Answer 9

Is variance in 1 condition similar to other
1) look at descriptive Stats
2)Are graphs a similar shape
3) Run Leven’s Test
Q-Q plot will fall on diagonal line
-Levene result p greater than 0.05

Question 10

Independent T- Test reporting

Answer 10

• 1 I V with 2 levels
  The mean was calculated for condition A + B . The data met the assumption which revealed that.

Question 11

Independent Non parametric AIterative

Answer 11

• If fails homogeneity but passes everything else report results of t-test but from not assumed row
• Mann -Whitney U Test