Week 1

Question 1

What type of statistics summarize and simplify data into a table or graph?

Answer 1

descriptive statistics

Question 2

What type of statistics make conclusions about populations derived from samples?

Answer 2

inferential stats

Question 3

What is a variable for a sample?

Answer 3

statistic

Question 4

What is a variable for a population?

Answer 4

parameter

Question 5

What are the two main categories of variables?

Answer 5

discrete/categorical and continuous

Question 6

What variables are discrete/categorical?

Answer 6

nominal and ordinal

Question 7

What variables are continuous (infinite # of possible values along a continuum)?

Answer 7

interval and ratio

Question 8

Which type of variable is ranked (eg top 3)

Answer 8

ordinal

Question 9

Which type of variable has a true zero point (meaning there’s an absence of the variable), like distance, weight, time?

Answer 9

ratio

Question 10

Which type of variable names a category, and is mutually exclusive?

Answer 10

nominal

Question 11

Which type of variable has intervals that have meaning, no true zero point (eg date, temperature)

Answer 11

interval

Question 12

What is the variable that affects the outcome desired and is manipulated by the researcher?

Answer 12

independent variable

Question 13

What’s the gold standard of study designs?

Answer 13

Random Control Trials (RCT)

Question 14

What do you call variables that can affect both exposure and outcome?

Answer 14

confounders

Question 15

What type of study design is like a snapshot in time (asks about exposure and if they have the outcome)?

Answer 15

cross-sectional study

Question 16

What type of study design researches those with the outcome and ask about their exposure?

Answer 16

case-control study

Question 17

What type of study design follows people over time, assessing exposure and if they get the outcome?

Answer 17

cohort study