2.2 More Graphs and Displays

Question 1

Stem-and-leaf plot

Answer 1

• organized and displayed sequentially to illustrate the distribution of data; combination of graphing and sorting.
  -Includes a key.
• Displays original data.
• Stem is formed by leading digit(s) and leaf is formed by the trailing data.
• Developed by John Turkey.
• Quantitative data.

Question 2

Dot Plot

Answer 2

• Displays the data by representing each piece with a dot positioned along a scale.
• Allows you to see how data one distributed.
• Quantitative data

Question 3

Bar Graph

Answer 3

• Shows the amount of data that belongs to each category as a proportionally sized rectangular area.
• Spaces between bars.
• Can be single or doubled.
• Qualitative data.

Question 4

Pareto Diagram

Answer 4

• Bar graph with the bars arranged from the most numerous category to the least.
• Qualitative data.
• No spaces between bars.

Question 5

Scatter Plot

Answer 5

• Uses ordered pairs to show how pieces of data are related.
• Quantitative data.

Question 6

Time Series Chart

Answer 6

• Quantitative entries taken at regular intervals over a period of time.

Question 7

Pie Charts

Answer 7

• Shows the relationship of parts to a whole equals 100%.
• Qualitative data.
• Must include a title, labels, percents, and/or a key.

Question 8

Midpoint equation is …

Answer 8

Class # + class # = X
X / 2 = answer

Question 9

Relative Frequency equation is…

Answer 9

Frequency / total Frequency
Ex: 6/25 = 0.24

Question 10

On graphs, what do you always need to have…

Answer 10

Titles, labels, and data

Question 11

How many =

Answer 11

Actual number

Question 12

How do you find numbers from percents?

Answer 12

.00% X total number = 00,000
Ex: .12% X 359,000 = 43,080

Question 13

Which three graphs/charts have qualitative data?

Answer 13

Bar graph, pie chart, and pareto chart