Data Management Unit 2

Question 1

Cause and Effect Relationship

Answer 1

Change in x produces change in y (EX: height vs velocity)

Question 2

Common-Cause Factor

Answer 2

External variable causes two variables to change in the same way.

Question 3

Reverse Cause-and-Effect Relationship

Answer 3

Dependent and independent variables are reversed in the process of establishing causality.

Question 4

Accidental Relationships

Answer 4

Correlation without any casual relationship between variables (Female engineers over the years increased, so did reality television)

Question 5

Presumed Relationships:

Answer 5

Correlation doesn’t seem to be accidental even though no cause and effect or common-cause factor. (level of fitness in people who like adventure movies)

Question 6

Extraneous Variable

Answer 6

Affects either the dependent or independent variable.

Question 7

Experimental Group

Answer 7

Group where the independent variable is changed in an experiment or statistical study.

Question 8

Control Group

Answer 8

Independent variable is held constant in an experiment or statistical study.

Question 9

Sampling Technique

Answer 9

Process of studying the population by gathering information and analyzing data

Question 10

Sample Bias

Answer 10

Bias resulting from a sampling frame that doesn’t reflect the characteristics of the overall population.

Question 11

Hidden variable

Answer 11

An extraneous variable that is harder to pin-point/recognize

Question 12

Outliers

Answer 12

Points in data that are much more different than the rest of the other data

Question 13

Scale

Answer 13

Can affect the graph/the way it is portrayed (climate change and rain fall)