CHAPTER 2

Question 1

bar chart

Answer 1

• a graphical display of data in categories made of vertical/horizontal bars
• each bar gives the frequence, relative frequency, or percentage frequency of items in its corresponding category

Question 2

frequency distribution

Answer 2

A table
- summarize the number of items/measurements
- in each of several NONOVERLAPPING CLASSES

Question 3

relative frequency of a class

Answer 3

frequency of the class/n
(n: number of observations)

Question 4

percent frequency

Answer 4

percentage of items/measurements in each of several nonoverlapping classes

Question 5

charts to summerize qualitative data

Answer 5

• bar chart
• pie chart
• Pareto chart

Question 6

pie chart

Answer 6

• Each pie slice: represents the frequency, relative frequency or percentage frequency

Question 7

construct pie chart

Answer 7

Relative frequency x 360

Question 8

Pareto chart

Question 9

histogram

Question 10

mound shaped

Question 11

symmetrical

Question 12

skewed

Question 13

frequency polygon

Question 14

cumulative frequency distribution

Question 15

ogive

Question 16

dot plots

Question 17

stem-and-leaf displays

Answer 17

• show the data set’s distribution by using stems consisting of leading digits and leaves (leaf) consisting of trailling digits
• place the measurements from smallest to largest

Question 18

contigency table

Question 19

scatter plot

Question 20

gauge

Question 21

bullet graph

Question 22

treemap

Question 23

sparklines

Question 24

dashboard

Question 25

data discovery

Question 26

splitting the stems

Answer 26

stretch the display by assigning each set of leading digits to two or more rows