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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 Likert Strongly 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 Amstat News.
Figure: Oct Amstat News
Mean for each category
Multiple pies by count
Waffle chart Academic Business/ Industry Government
Source of waffle chart
Ribbon from Excel
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 (973) Author: Creating More Effective Graphs (Wiley 2005)
©2011 Tableau Software Inc. All rights reserved. I claim that communicates more clearly and accurately than do or,,,,,,.
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