Statistics and Experimental Design - Week 5 - Tests of Independ

Which of the following tests could apply to data of a nominal measurement scale?

• Normality test

• Student’s one sample t test

• Wilcoxon signed-rank test

• χ² test of independence

Which of the following datasets could NOT be used with a z test of proportions?

• The percentage of men who have dogs and the percentage of women who have dogs

• The proportion of car accidents that happen in the snow in Columbus and in Atlanta

• A sample of people on which data has been collected on whether or not they have allergies and whether or not they have cats

• The percent by volume of air in Lays potato chip bags and in Chex Mix bags

• 3 columns, 3 rows

• 4 columns, 4 rows

• 3 columns, 4 rows

• 4 columns, 5 rows

Which pairing is most correct?

• Odds ratio – cohort study

• Odds ratio – prospective study

• Relative risk – case-control study

• Relative risk – prospective study

Contingency tables can be used in all of the following EXCEPT...

• Odds ratio test

• McNemar’s test

• Relative risk test

• ROC analysis

ROC curves plot...

• AUC vs specificity

• Predictive power vs AUC

• Sensitivity vs false positive rate

• False positive rate vs true positive rate

• Treatment (+) row = 50

  Treatment (-) row = 50

• Treatment (+) row = 25

  Treatment (-) row = 75

• Treatment (+) row = 75

  Treatment (-) row = 25

• Treatment (+) row = 100

  Treatment (-) row = 0

• Treatment (+) row = 0

  Treatment (-) row = 200

• 1.33

• 2.67

• 4.00

• 5.33

• 1.71

• 0.58

• 1.28

• 0.78

• 1.71

• 0.58

• 1.28

• 0.78