Plotting Likert and Other Rating Scal PRESENTED BY Naomi B. Robbins NJTUG | Hoboken | January 31, 2012 | Copyright © 2012 N Robbins
Mar 29, 2015
Plotting Likert and Other Rating Scales
PRESENTED BY
Naomi B. Robbins
NJTUG | Hoboken | January 31, 2012 | Copyright © 2012 Naomi B. Robbins
What are rating scales?
©2011 Tableau Software Inc. All rights reserved.
Psychometric scales commonly used in questionnaires
• LikertStrongly disagree, disagree, no opinion, agree, strongly agree
• Semantic differential scales Other bipolar adjectives; e.g., not important to very important, evil to good.
Questions we asked
• How are rating scales plotted now?
• Which type of graph do we like best?
• Can we plot it using Tableau Software?
How are rating scales plotted now?
• Tables• Grouped bar chart• Divided bars• Multiple pie charts• Waffle charts
• Ribbon charts• Radar Plots• Showing average for each question• Diverging stacked bars
Table: Oct. 2005 Amstat News
.
Figure: Oct. 2005 Amstat News
Grouped bar
Mean for each category
Divided bar
Multiple pies
Multiple pies by count
Waffle chart
Academic
Business/ Industry
Government
Source of waffle chart
Ribbon from Excel
Ribbon chart
Radar
Diverging stacked bar chart
Features of diverging stacked bar charts
©2011 Tableau Software Inc. All rights reserved.
1. Centered at 0, with reference line at 0
2. Reference line behind bars so that “no opinions” not split
3. Symmetric intensity of colors in each direction
4. Colors that are accessible to those with color vision deficiencies
5. Sort by right-hand side
6. Parallel one-dimensional bars for each question or group
Adding other categories
Contact info:
©2011 Tableau Software Inc. All rights reserved.
Naomi B. Robbins
http://www.nbr-graphs.com
(973)694-6009
Twitter: @nbrgraphs
Author: Creating More Effective Graphs (Wiley 2005)
©2011 Tableau Software Inc. All rights reserved.
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