6. Research, Ethics, and Professional Practice

Biostatistics — Quiz

Test your understanding of biostatistics with 5 practice questions.

Practice Questions

Question 1

A sports scientist is investigating the relationship between an athlete's daily caloric intake and their body fat percentage. After collecting data, they find a strong negative correlation. Which of the following statistical concepts best describes this finding?

Question 2

In a study comparing the effectiveness of two different warm-up protocols on sprint performance, a researcher obtains a p-value of $0.06$. If the predetermined significance level ($\alpha$) is set at $0.05$, what is the appropriate statistical decision?

Question 3

A sports nutritionist is developing a new dietary supplement and wants to test its effect on muscle recovery time. They conduct a study with a treatment group receiving the supplement and a control group receiving a placebo. Which of the following experimental designs is most appropriate to minimize bias and confounding variables?

Question 4

A sports scientist is analyzing data on the number of concussions sustained by athletes in different contact sports (e.g., rugby, American football, ice hockey). The goal is to determine if there is a significant difference in concussion rates among these sports. Which statistical test is most appropriate for this analysis?

Question 5

When conducting a regression analysis to predict an athlete's performance score based on their training hours, a researcher finds that the residuals exhibit a clear pattern (e.g., a 'U' shape). What does this pattern in the residuals primarily suggest?