"How To Know" Exercise Key

1. HDL: The outcome variable (HDL) is continuous. We have two independent groups (male/female). We wish to infer �1 - �2. (Cont-Two)

2. GLAUCOMA: The outcome variable is continuous. Samples are paired. We wish to infer �d. (Cont-Pair)

3. BIRTHWT: The outcome variable (birth weight) is continuous. The independent variable (gestational age) is continuous. We wish to infer either the correlation (r) or slope coefficient (b). (Cont-Cont)

4. CARDIAC: The outcome (cardiac output) variable is continuous. The independent variable is (body weight) continuous. We wish to infer either the correlation (r) or slope coefficient (b). (Cont-Cont)

5. HEADTRAU: This is a case-control sample. We wish to infer the OR. (Bin-Case)

6. ROGAINE: The outcome variable is continuous. We have three independent groups. (Cont-Sev).

7. WT&BP: The outcome variable is continuous. The independent variable is continuous. We wish to infer either the correlation (r) or slope coefficient (b). (Cont-Cont)

8. CLIN-TRI: The outcome variable is categorical. There are independent groups. We wish to infer RR. (Bin-Coh)

9. ANALGESIC: The dependent variable is continuous. There are independent groups. We wish to infer�1 - �2. (Cont-Two)