Question

What statistical test would you conduct for each example below?
(a) You want to determine if there is an association between age and cholesterol (HDL). You have three age groups and you’ve grouped HDL into low/med/high.
(b) You want to see if there’s an association between the number of days exercised in the past month (0–31 days) and blood pressure (SBP).
(c) You’d like to compare mean patient satisfaction scores (0–100) across three different units in the hospital.
(d) You’d like to compare mean patient satisfaction scores (0–100) across two different units in the hospital.

Answer 1

A) to determine if there is an association between age and cholesterol (HDL). You have three age groups and you’ve grouped HDL into low/med/high.

Cor relational statistical test can be used to determine association between variables.

B) to see if there’s an association between the number of days exercised in the past month (0–31 days) and blood pressure (SBP).

Correlational test can be used.This test looks for association between two variables.(exercise and B.P)

Chi square test can be used to test strenghth of association between two categorical variables.

C) to compare mean patient satisfaction scores (0–100) across three different units in the hospital.

ANOVA test can be used as it tests the difference between group means after any other variance in the outcome variable is accounted for.

D) to compare mean patient satisfaction scores (0–100) across two different units in the hospital.

Paired t test can be used to compare means .