Statistics 1.2

Question 0

explanatory

Answer 0

Any factor that can influence the response variable

Question 1

response

Answer 1

A particular quantity that we ask a question about in a study

Question 2

Lurking variable

Answer 2

An explanatory variable that was not considered in a study, but affects the value of the response variable in the study

Question 3

observational study

Answer 3

Measures the value of the response variable without attempting to influence the value of either the response or explanatory variables. The researcher observes the behavior of the individuals without trying to influence the outcome of the study

Question 4

designed experiment

Answer 4

Researcher assigns the individuals in a study to a certain group, intentionally changes the value of an explanatory variable, and then records the value of the response variable for each group

Question 5

confounding

Answer 5

Occurs when the effects of two or more explanatory variable are not separated. Therefore, any relation that may exist between an explanatory variable and the response variable may be due to some other variable not counted in the study. (lurking)

Question 6

census

Answer 6

A list of all individuals in a population along with certain characteristics of each individual

Question 7

Cross-sectional study

Answer 7

An observational study that collects info about individuals at a specific point in time or a very short period of time

Question 8

Case-control study

Answer 8

Retrospective, meaning they require individual to look back in time, require researcher to look at existing records. Individuals who have certain characteristics