CH2 - Descriptive Statistics

Question 1

Labels or names used to identify categories of like items

Answer 1

Categorical data

Question 2

Numerical values that indicate how much or how many

Answer 2

Quantitative data

Question 3

Term used to describe the use of graphical displays to summarize and present information about a data set

Answer 3

Data visualization

Question 4

Tabular summary of data showing the number of observations in each of several non-overlapping categories or classes

Answer 4

Frequency Distribution

Question 5

Tabular summary of data showing the fraction or proportion of observations in each of several nonoverlapping categories or classes

Answer 5

Relative Frequency Distribution

Question 6

Tabular summary of data showing the percentage of overservations in each of several nonoverlapping classes

Answer 6

Percent frequency Distribution

Question 7

Graphical device for depicting categorical data that have been summariezed in a frequency, relative frequency, or precent frequency distribution

Answer 7

Bar chart

Question 8

Graphical device for presenting data summaries based on subdivision of a circle into sectors that correspond to the relative frequency for each class

Answer 8

Pie chart

Question 9

The value halfway between the lower and upper class limits

Answer 9

Class midpoint

Question 10

graphical device that summarizes data by the number of dots above each data value on the horizontal axis

Answer 10

Dot Plot

Question 11

Graphical display of a frequency distribution, relative frequency distribution, or percent frequency distribution of quantitative data constructed by placing the class intervals on the horizontal axis and the frequencies, relative frequencies, or percent frequencies on the vertical axis

Answer 11

Histogram

Question 12

Tabular summary of quantitative data showing the number of data values that are less than or equal to the upper class limit of each class

Answer 12

Cumulative frequency distribution

Question 13

Tabular summary of quantitative data showing the fraction or proportion of data values that are less than or equal to the upper class limit of each class

Answer 13

Cumulative relative frequency distribution

Question 14

Tabular summary of quantitative data showing the percentage of data values that are less than or equal to the upper class limit of each class

Answer 14

Cumulative Percent Frequency Distribution

Question 15

Graphical display used to show simultaneously the rank order and shape of a distribution of data

Answer 15

Stem-and-leaf display

Question 16

Tabular summary of data for two variables

Answer 16

Crosstabulation

Question 17

Conclusions drawn from two or more separate cross tabulations that can be reversed when the data are aggregated into a single crosstabulation

Answer 17

Simpson’s paradox

Question 18

Graphical display of the relationship between two quantitative variables. One variable is shown on the horizontal axis and the other variable is shown on the vertical axis

Answer 18

Scatter diagram

Question 19

A line that provides an approximation of the relationship between two variables

Answer 19

Trendline

Question 20

Graphical display for depicting multiple bar charts on the same display

Answer 20

Side-by-side bar chart

Question 21

Bar chart in which each bar is broken into rectangular segments of a different color showing the relative frequency of each class in a manner similar to a pie chart

Answer 21

Stacked bar chart

Question 22

Set of visual displays that organizes and presents information used to monitor the performance of a company or organization in a manner that is easy to read, understand, and interpret

Answer 22

Data dashboard