Chapter 2

Question 1

in their original form

Answer 1

raw data

Question 2

is the organization of raw data in table form using classes and frequencies.

Answer 2

frequency distribution

Question 3

uses each data value as a class

Answer 3

ungrouped frequency distribution

Question 4

is a distribution that shows the number of data values less than or equal to a specific value

Answer 4

cumulative frequency distribution

Question 5

is a graph that displays the frequency distribution of continuous data using bars

Answer 5

histogram

Question 6

is a graph that displays the frequency distribution of continuous data by a line plot of the midpoints vs. the frequency

Answer 6

frequency polygon

Question 7

is a frequency polygon of cumulative frequency distribution

Answer 7

ogive

Question 8

percent frequency

Answer 8

relative frequency (proportions)

Question 9

plots the frequency distribution of a categorical variable.

Answer 9

bar graph

Question 10

is a bar chart that orders categories from highest to lowest. Its useful for identifying the most (or least) frequent category.

Answer 10

Pareto chart

Question 11

represents data that occur over a specific period of time.

Answer 11

time series graph

Question 12

is a graph of the relative frequency distribution that represents each relative frequency by a piece of the pie

Answer 12

pie graph

Question 13

plots each data point as a dot on a number line. Dots are stacked vertically. It is used primarily to quickly identify outliers for small data sets

Answer 13

dot plot

Question 14

represents each observation by a stem and leaf. It looks similar to a histogram, but actual data can be recovered

Answer 14

stem and leaf plot