Data Collection & Observational Studies Flashcards
1
Q
Anecdotal evidence
A
- Data collected informally
- Through personal testimony
2
Q
Observational evidence
A
- Observes individuals
- Measures variables of interest (doesn’t attempt to influence the responses)
3
Q
Treatment group
A
Does receive treatment (or has the characteristic of interest)
4
Q
Control group
A
Doesn’t receive treatment
5
Q
Confounding (Lurking) variable
A
- Variable that hasn’t been accounted for
- Causes difference in groups being studied
6
Q
Observational Study Advantages
A
- Detect associations between variables
- Used to study variables that are impossible to control
7
Q
Observational Study Disadvantages
A
Cannot isolate causes to determine causations
8
Q
Controlled experiment
A
- Deliberately impose a treatment on individuals
- Record their responses
- Use randomization and controlling practices
9
Q
Retrospective
A
A study that looks into the past
10
Q
Prospective
A
A study that deals with current data
11
Q
Longitudinal
A
A study that follows the same individual over a long period of time
12
Q
Cross sectional study
A
Surveys collecting data on a population at one point in time
13
Q
Case-Control
A
Often retrospective study for rare conditions
14
Q
Cohort study
A
A longitudinal study following a group of similar individuals
