Grade 12, Data test preparation

Question 1

under what conditions would a Chi squared test be appropriate

Answer 1

1) - nominal data
- independent experimental measures design (independent
groups design)
- difference between two means

2) - nominal data
- correlation
- relationship between two means

Question 2

under what conditions would a sign test be appropriate

Answer 2

• nominal data
• dependent experimental measures (repeated measures or
  matched pairs)
• difference between two means

Question 3

under what conditions would a Mann Whitney U test be appropriate

Answer 3

• ordinal data
• independent experimental measures design (independent groups)
• difference between two means

Question 4

under what conditions would a Wilcoxon signed rank test be appropriate

Answer 4

• ordinal data
• dependent experimental measures (repeated measures/ matched pairs)
• difference between two means

Question 5

under what conditions would a Spearmans Rho correlation be appropriate

Answer 5

• ordinal data

- correlation (relationship between two means)

Question 6

under what conditions would an independent t- test be appropriate

Answer 6

interval/ratio data
parametric conditions
independent experimental measure design (independent groups)

Question 7

under what conditions would a repeated t-test be appropriate

Answer 7

interval/ratio data
parametric conditions
dependent experimental groups design (repeated measures/ matched pairs)

Question 8

under what conditions would a pearsons product moment correlation coefficient test be appropriate

Answer 8

interval/ ratio data
parametric conditions
correlation design