HCS 438 All DQs

Week 1

What is an example of "statistical abuse" in the media during the past week?

When would random sampling not be the best approach to sample selection? Give an example.

Week 2

What factors do you think would contribute to a distribution being skewed?

What are the definitions of means, medians, and modes? Give an example of each that are reported in a health care organization.

Week 3

Give one example of when practical significance would outweigh statistical significance? Explain your rationale.

Why is it important to learn what sample size was used in a study in which no statistical difference was found?

Week 4

What is an example of two variables that are likely to be correlated because they are both changing over time?

A study of employees at a large company found a negative correlation between weight and distance walked on an average day. In other words, people who walked more weighed less. Would you conclude that walking causes lower weight? Can you think of an alternate explanation for the findings?