Effective data visualizations

Question 1

what is the David McCandless method?

Answer 1

Inform, Story,Goal,Visual form.

Question 2

Information

Answer 2

the data with which you’re working

Question 3

Story

Answer 3

a clear and compelling narrative or concept

Question 4

Goal

Answer 4

a specific objective or function for the visual

Question 5

visual form

Answer 5

an effective use of metaphor or visual expression

Question 6

Effective visualization questions

Answer 6

What is the practical question? What does the data say? What does the visual say?

Question 7

mark

Answer 7

are basic visual objects such as points ,line, and shapes. Every mark can be broken down into four qualities.

Question 8

what are the four qualities of a mark?

Answer 8

position, size,shape,color

Question 9

position

Answer 9

where a specific mark in a space relative to a scale or to other marks

Question 10

Size

Answer 10

how big,small,long,or tall is the mark

Question 11

shape

Answer 11

does the shape of the specific object communicate something about it?

Question 12

color

Answer 12

what color is the mark?

Question 13

channels

Answer 13

are visual aspects or variables that represent characteristics of the data in a visualization.

Question 14

Accuracy

Answer 14

are the channels helpful in accurately estimating the values being represented?

Question 15

pop out

Answer 15

how easy it it to distinguish certain values from others?

Question 16

grouping

Answer 16

how effective is a channel at communicating groups that exist in the data

Question 17

Correlation

Answer 17

in statistics is the measure of the degree to which two variables move in relationship to each other

Question 18

Causation

Answer 18

refers to the idea that an event leads to specific outcome

Question 19

what si the difference between correlation and causation?

Answer 19

Correlation: There is a positive correlation between the number of hours of sleep a person gets and their academic performance.
Causation: Getting more sleep causes people to perform better academically.
Correlation: There is a negative correlation between the amount of money a person earns and their happiness.
Causation: Earning more money does not necessarily make people happier.

Question 20

in your data analysis ,remember to

Answer 20

critically analyze correlation that you find
examine the data’s context to determine if a causation makes sense
understand the limitations of the tools that you use for analysis

Question 21

decision tree

Answer 21

is a decision-making tool that allows you to make decisions based on key questions that you can answer yourself