Choosing a Statistical Test

Question 1

What is the acronym?

Answer 1

Chicken
Should
Come
Mashed
With
Swede
Under
Roast
Potatoes

Question 2

Name the Statistical Tests according to the acronym

Answer 2

Chi-squared
Sign test
Chi-squared
Mann-whitney
Wilcoxon
Spearman’s rho
Unrelated t-test
Related t-test
Pearson’s r

Question 3

Chi-Squared

Answer 3

• Test of difference and correlation
• Unrelated design (independent groups)
•Nominal data

Question 4

Sign test

Answer 4

• Test of difference
• Related design (repeated measures, matched pairs)
• Nominal data

S Value is always the smallest number
-> but sometimes they don’t give us nominal data and instead they give us nominal data so we have to convert it to find out the S score
-> see whether it is significant
• whether it is directional or non-directional
• P value
• N
-> MUST be listed

Question 5

Mann-whitney

Answer 5

• Test of difference
• Unrelated design
• Ordinal data

Question 6

Wilcoxon

Answer 6

• Test of difference
• related design
• ordinal data

Question 7

Spearman’s rho

Answer 7

• test of correlation
• ordinal data

Question 8

Unrelated t-test

Answer 8

• Test of difference
• unrelated design
• interval data

Question 9

Related t-test

Answer 9

• test of difference
• related design
• interval data

Question 10

Pearson’s R

Answer 10

• test of correlation
• interval data

Question 11

How to calculate Degrees of Freedom

Answer 11

• Pearson’s R: N-2
• Related t-test: N-1
• Unrelated t-test: N(A)+N(B)-2