Beauty and the Beast:

5 Ways Data Visualizations Lie

Mum of a 15 month old

A little about Meltem Rijkers-Oktay

Big data visualization fan

Annoyingly perfectionist

Better world

The storyHello! I am Mel the Marketing Manager…

THE BEAUTY

Interest in International Education

Interest in International Education - United Kingdom

Interest in International Education – Business & Management

United Kingdom

Interest in International Education – Business & Management

Retail Management United Kingdom

Interactive Dashboards

https://ourworldindata.org/tertiary-education

▪ Can you send me how much % of your visitors are from

Portugal?

▪ Do you have visitor statistics so I can see if it fits my

target group/strategy?

This doesn’t match with our target countries, we don’t think it is a good channel to promote.

• Data I need for decision making

Data Scientist vs Toddler

DATA PEOPLE

Data People

DATA PEOPLE

DATA PERSON’S

THE BEAST

1) Missing / Incomplete Data

Missing data

Missing data

Internet Accessibility

Missing data

2) Data bias

Types of bias

Types of bias

Confirmation Bias Availability Heuristic

The Simpson’s Paradox

Types of bias

3) Not Enough Data / Not Representative

4) Misleading visualisation

Should you avoid using misleading data visualisation just to support your argument?

YES50%

AnswersOther than“Yes”

50%

5%

18%

332,033 16,421

74,268 13,376

5%

18%

22%

% of studies per country

5) Correlation vs causation

Shark attack & Ice-cream

Storytelling with data

EXERCISE

Indian Students looking to study abroad

Indian Students in Canada Statistics

QUESTIONS?