data visualization best practice webinar presentation slides

Data Vis

Today's agenda

Data is exploding

The Human Brain

Making sense of numbers

Sum Sales Month

Region Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Central $42,759 $47,743 $51,075 $49,825 $54,010 $61,321 $68,250 $70,038 $76,328 $82,075 $83,475 $95,385

East $55,000 $54,850 $53,995 $57,850 $55,372 $48,328 $44,385 $49,342 $58,950 $62,375 $58,251 $51,100

South $75,500 $73,650 $72,980 $72,999 $71,438 $69,500 $71,150 $66,359 $69,352 $64,287 $66,247 $65,295

West $29,272 $29,735 $30,500 $33,520 $34,980 $35,795 $37,594 $36,759 $39,243 $41,500 $43,513 $42,955

Yearly sales by region

A picture is worth a thousand numbers

Central 

South

East

West 

Goals of Data Visualization

Types of Data Visualization

Best Practice Data Visiualization

Encode meaning in your charts

Key Concepts

Revealing patterns

Choose the right chart type

Big Number Charts

Big Number answer questions about a single metric

Views this month

Requires:  Metric

Add Big Numbers to Charts

Yearly Sales

                                                      Infographics

Tweet History    Last 90 Days

Line Charts

Metric over Time

Date or Date/Time

Metric

Requires:

                                            Line Chart vs Stepped Chart

    Line Chart shows trend    Step Chart more granular       (better if dates missing)

Line Charts vs Area Charts

Line Chart Area Chart

Use Stacked Area Chart to see multiple to whole relationship

Used multi-line to compare different categories

Bar and Column Charts

Column Chart Bar Chart

Metric

Dimension

Requires:

Column Charts easy to understand...

...but become difficult to compare with too many categories.

One solution is to rotate the horizontal font...

...Bar Chart best if more than 10 categories.

Proportional chart highlights difference from top category.

Bar Charts with multiple dimensions

Stacked

          Shows multiple to whole relationship

Clustered

               Compare multiple categories

 Requires multiple:               Dimensions

   Metrics

When comparing 2 metrics

Layered / Bullet ChartClustered

The power of cluster charts diminishes as categories increase...

Trellis Charts can re-group categories together on separate charts with same y-axis for comparison.

When to use a Pie Charts?

                                                       Effective Pie Chart

Women are more likely to attend day classes, while men are more commonly found in evening classes

Consider Ring Chart as an alternative to a Pie Chart

Attendees

Maps

Requires:Metric                            GeoPack          or                 GISPolygon          or              GISPoint

Country, State, Postcode, Zip

GIS Map / Thematic

                                                              Bubble Maps

Heat Map

Histogram

Histogram show the distribution of numerical data

Requires:

Metric

Box and Whisker

Requires:

Dimension

Metric

Scatter Plots

Positive Correlation Negative Correlation No Correlation

Requires:  2          Metrics

Consider using Trend Lines

Add a metric as size and make Bubble Charts

Heat Grid

Requires:

Dimension (2)

Metric

Consider adding metric as size for Heat Grid

                                                                  Week Density

Treemaps

Requires:

Dimension(s)

Metric

Meters

Requires:

Metric with conditional formatting

Special Purpose

Requires:

Dimension

Metric

Funnel

Categories by Stage

Radar - multivariate data with categories along 3+ axis

Proportional Infographic

Ranch Dressing Ingrediants

Requires:

Metric

Dimension

Comparative Infographics add context and emotion

Metric

Gross Domestic Product (Billions)

Required:Dimension

Raster Map Infographic

3D is not best practice

Now in 3-D !!!!!!!!!!!

Style with Formatting

Colors

Gridlines

Grid LinesNo Grid Lines

Labels

LabelsNo Labels

Legends

Maintain consistency

Add Clarity

Titles & Descriptions

Describe Chart

Apple Units sold per quarterDescribe Meaning

iPhones driving growth

Sorting

Alphabetical Ascending Descending

Sorting Alphabetical helps people find what they are looking for

NBA regular season wins 2015-16

Sort by Ascending - tells a story of growth

Growth in Users

Sort by Descending - helps compare largest to smallest

Highlight what's important

Conditional Formatting

Reference Lines

Annotations

Highlight Trends

Project Forecasts

Make it interactive

Time Sliders and Unit Selection

Filters and Brushing

Zooming and Panning

Drill Throughs

Drill Down

Drill Anywhere

Series Selection

Invoiced

Share

Data is more valuable when shared

Demo

Summary

Recommended Reading

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