Blog

Sanitation prevents the natural spread of disease

An odds ratio estimates relative risk by comparing exposure among cases to exposure among controls

A line listing database consists of a table in which each row represents a unique record of a case and each column is a variable of identifying information

Doctors at a local hospital are trying to identify if there is a pattern to the number of babies born per month over the course of several years. What is the dependent variable in this example?

The geometric mean is used for data sets which have an exponential (logarithmic) distribution

If I used scrap paper to work on problems, I have shown both sides of it on camera and torn it to pieces. (this question is worth no points, it is just  reminder to complete this so you don’t fail the exam do not doing it)

A mortality frequency measure is used to measure the frequency of death within a population

What is the range of the following data set (45, 61, 22, 13, 54, 37)

A dot plot can be used to show the relationship between a categorical variable on the x-axis and a continuous variable on the y-axis

Jason measures incubation time of a flu virus in a sample of 157 individuals and finds that the mean date of symptoms appearing (after exposure) is 3 days with a standard deviation of 0.6 days. What is the standard error of this population?