Blake is interested in training for his first marathon and wants to determine whether the finishing time of non-elite marathon runners depends on the type of training program used.There are three training programs he is interested in comparing: Hal Higdon's, Jeff Galloway's, and Art Liberman's.Blake is able to track down 30 runners, 10 who have used Higdon's, 10 who have used Galloway's, and 10 who have used Liberman's.Blake asks the runners for their marathon finishing times.What statistic should he use to analyze his data?
A) Spearman rank-order correlation coefficient
B) Mann-Whitney U test
C) one-way ANOVA
D) Kruskal-Wallis H test

Question

Quizplus · Accepted Answer

The appropriate statistical test for this scenario is a one-way ANOVA. This is because there are three independent groups (Higdon's, Galloway's, and Liberman's) and the dependent variable is continuous (finishing time). The one-way ANOVA will allow Blake to compare the means of the three groups and determine whether there is a significant difference in finishing times between them. The Spearman rank-order correlation coefficient is used to measure the strength and direction of a relationship between two variables that are measured on an ordinal scale. The Mann-Whitney U test and Kruskal-Wallis H test are both used to compare two or more independent groups when the dependent variable is measured on an ordinal or continuous scale, but they are not appropriate for this scenario as the dependent variable is measured on a continuous scale.

Blake Is Interested in Training for His First Marathon and Wants