Data Visualizations (Lecture 4)

Question 1

Data Visualization

Answer 1

Presentation of data in graphical format, helps decision makers see analytics visually

Question 2

Why use charts in business?

Answer 2

• To convey information and make sense of data
• To demonstrate a relationship between values
• To help with decision making

Question 3

Column Chart

Answer 3

A chart in which data is represented in terms of columns (e.g. to show profit over past 5 years)

Question 4

Stacked Column Chart

Answer 4

A chart in which data series are stacked one on top of the other in vertical columns (e.g. to show expenses categories per season)

Question 5

Bar Chart

Answer 5

A chart in which data is represented in terms of horizontal bars (e.g. to show avg. time spent on smartphones only)

Question 6

Line Chart

Answer 6

Show data as a line where each successive data point is connected to the previous (e.g. to show growth of info over time)

Question 7

Pie Chart

Answer 7

Looks like a pie, each slice represents a particular category of data (e.g. business market size)

Question 8

A Column Chart is Good For….

Answer 8

Comparisons with seven or less categories (small)

Question 9

A Stacked Column Chart is Good For…

Answer 9

To show a composition (not more than 3-4) when the composing parts are small

Question 10

A Bar Chart is Good For….

Answer 10

When the number of categories is greater than 7

Question 11

A Line Chart is Good For….

Answer 11

Displaying trends over a period of time when there are more than 20 data points

Question 12

A Pie Chart is Good For….

Answer 12

Simple Compositions or a part-to -whole relationship