Blog

A study with a very large sample finds that a new teaching method increases average exam scores from 80% to 81%, and the difference is statistically significant. What is the best conclusion?      

This is an image from your reading 3.2 Structure of Earth. What does it mean to have a rate of isostatic adjustment of -6 mm/y (like the location at the tip of the arrow)?

How do scientists think oceans formed? (Hint: Make sure you have watched the Earth Rocks video.)

What is the mass of aluminum with a volume of 10 cm3 and density of 2.70 g/cm3? (Remember to include units)

How did the atmosphere change over time (from early Earth to present day)?

A ___ is a type of graph that shows the frequency of cases for categories of a categorical (discrete) variable. 

An example of a recent (within last 10 years) pandemic is:

To answer the question “what proportion of cases die from the disease” you should calculate the :

A community in Peru has a population of 154750 people. In 2016, 750 people died, including 38 deaths due to colorectal cancer. A total of 1250 people had colorectal cancer in 2016. What was the prevalence of colorectal cancer in 2016?

Epidemiologists believe that diseases occur at random.