1.1-1.2 Vocabulary

Question 1

Conditional Relative Frequency

Answer 1

gives the percent or proportion of individuals that have a specific value for one categorical variable among individuals who share the same value of another categorical variable (the condition).

Question 2

Joint Relative Frequency

Answer 2

gives the percent or proportion of individuals that have a specific value for one categorical variable and a specific value for another categorical variable.

Question 3

two-way table

Answer 3

a table of counts that summarizes data on the relationship between two categorical variables for some group of individuals.

Question 4

Marginal Relative Frequency

Answer 4

gives the percent or proportion of individuals that have a specific value for one categorical variable.

Question 5

Statistics

Answer 5

the science and art of collecting, analyzing, and drawing conclusions from data.

Question 6

individual

Answer 6

an object described in a set of data. Individuals can be people, animals, or things

Question 7

variable

Answer 7

an attribute that can take different values for different individuals.

Question 8

Categorical Variable

Answer 8

assigns labels that place each individual into a particular group, called a category

Question 9

Quantitative Variable

Answer 9

takes number values that are quantities—counts or measurements.

Question 10

discrete variables

Answer 10

A quantitative variable that takes a fixed set of possible values with gaps between them

Question 11

continuous variables

Answer 11

A quantitative variable that can take any value in an interval on the number line

Question 12

Distribution

Answer 12

tells us what values the variable takes and how often it takes those values

Question 13

Frequency Table

Answer 13

shows the number of individuals having each value

Question 14

Relative Frequency Table

Answer 14

shows the proportion or percent of individuals having each value.

Question 15

Bar Graph

Answer 15

shows each category as a bar. The heights of the bars show the category frequencies or relative frequencies

Question 16

Pie Chart

Answer 16

shows each category as a slice of the “pie.” The areas of the slices are proportional to the category frequencies or relative frequencies

Question 17

Association

Answer 17

when knowing the value of one variable helps us predict the value of the other there is an _____

Question 18

side-by-side bar graph

Answer 18

displays the distribution of a categorical variable for each value of another categorical variable. The bars are grouped together based on the values of one of the categorical variables and placed side by side.

Question 19

segmented bar graph

Answer 19

displays the distribution of a categorical variable as segments of a rectangle, with the area of each segment proportional to the percent of individuals in the corresponding category.

Question 20

mosaic plot

Answer 20

a modified segmented bar graph in which the width of each rectangle is proportional to the number of individuals in the corresponding category.