STA 210 Questions and Correct Answers the Latest Update
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Course
STA 210
Institution
STA 210
Explain how slippery evidence affects human inference?
At first glance we infer one thing, but with further review we see something else is
true.
Why is it important to critically read news articles, and why should we be
careful about spreading information we are not confident about?
We ne...
✓ any characteristic of an individual.
✓ -a variable can take on different values for different individuals.
Numerical variable
✓ anything you describe with numbers. example: speed, age, price, number of elevators
in a building.
Categorical variables
✓ anything you describe with quality. example: gender, make of a car, ice cream flavor.
Observational Studies
✓ -Observes individuals and measures variables of interest.
✓ -Hands off.
✓ -The purpose of an observational study is to describe some group or situation.
✓ -no evidence - you can't use it as evidence.
Population
✓ entire group we are interested in studying.
Sample
✓ Part of the population we collect information from.
✓ - used to draw conclusion about the entire group.
Census
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