Plotting Likert and Other Rating Scales

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Presentation transcript:

Plotting Likert and Other Rating Scales PRESENTED BY Naomi B. Robbins NJTUG | Hoboken | January 31, 2012 | Copyright © 2012 Naomi B. Robbins ©2011 Tableau Software Inc. All rights reserved.

©2011 Tableau Software Inc. All rights reserved. What are rating scales? 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. ©2011 Tableau Software Inc. All rights reserved. ©2011 Tableau Software Inc. All rights reserved.

Questions we asked How are rating scales plotted now? Which type of graph do we like best? Can we plot it using Tableau Software? ©2011 Tableau Software Inc. All rights reserved.

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 http://www.perceptualedge.com/example9.php

Radar

Diverging stacked bar chart

Features of diverging stacked bar charts Centered at 0, with reference line at 0 Reference line behind bars so that “no opinions” not split Symmetric intensity of colors in each direction Colors that are accessible to those with color vision deficiencies Sort by right-hand side Parallel one-dimensional bars for each question or group ©2011 Tableau Software Inc. All rights reserved. ©2011 Tableau Software Inc. All rights reserved.

Adding other categories

©2011 Tableau Software Inc. All rights reserved. Contact info: Naomi B. Robbins naomi@nbr-graphs.com http://www.nbr-graphs.com (973)694-6009 Twitter: @nbrgraphs Author: Creating More Effective Graphs (Wiley 2005) ©2011 Tableau Software Inc. All rights reserved. ©2011 Tableau Software Inc. All rights reserved.

©2011 Tableau Software Inc. All rights reserved. I claim that communicates more clearly and accurately than do , , , , , or . , ©2011 Tableau Software Inc. All rights reserved. ©2011 Tableau Software Inc. All rights reserved.