1. FUNDAMENTALS OF DATA VISUALIZATION Making Sense of Data

2. 2  Why is graphical representation important?  A quick Exercise!  Types of graphs… When to use which type  Best practices and some guidelines  A detailed take-home Exercise Agenda

3. 3  Why is graphical representation important?  A quick Exercise!  Types of graphs… When to use which type  Best practices and some guidelines  A detailed take-home Exercise Agenda

4. (Scenario 1) : Employees in Co. AA (1979 – 2009) Company AA was formed in 1979 with 5 employees. In the next few years, the company grew its operations and by 1984 it had recruited few more full-time employees to make the total number of employees 11. In the next 5 years, the employee strength became almost 3 time – 30 employees by end of 1989. 90s saw some fast growth in the company and by the end of 2001, the company boasted having touched the 1000 figure. From 2004 onwards, the company has been adding more than 1000 employees every year. By end of 2009, Company AA has a total strength of 8420 full-time employees.

5. (Scenario 2) : Employees in Co. AA (1979 – 2009) YearNo. of Emp 19795 198411 198930 1993130 1994300 1999575 …… …… 20064500 20075500 20087000 20098420

6. (Scenario 3) : Employees in Co. AA (1979 – 2009)

7. Some facts… On average, humans read 200 words per minutes While, on average, it takes 4 secs to read a simple chart that has two well-defined axes CHARTS  ENHANCE SPEED OF COMPREHENSION  MORE IMPACTFUL IN STORY-TELLING

8. The BIG picture… “Why do we need Charts”? When we have raw data and our purpose is to - Share information - Prove or Disprove something (e.g. Praxis Profile / Placement data)

9. 9  Why is graphical representation important?  A quick Exercise!  Types of graphs… When to use which type  Best practices and some guidelines  A detailed take-home Exercise Agenda

10. Growth of mobile telephony services: Thailand ALL USERSPOST-PAID USERSPRE-PAID USERS

11. Another one… Given data: Fertility Rate (number of children per woman) Life Expectancy Population …for 100+ Countries, from 1962 to 2005. How will you represent this in Charts?

12. 12  Why is graphical representation important?  A quick Exercise!  Why Charts / Graphs? Different types of graphs… When to use which type  Best practices and some guidelines  A detailed take-home Exercise Agenda

13. What are the options? …When we have raw data! Simply type out the data on the Slide Make an infographic Create a table Create a Chart (or Graph)… the most obvious choice

14. Do you really need a Chart/Graph? Let us first understand… What is a Chart (or Graph)?

15. Never use Graphs when you have a single data point… Typing out data OR Infographics can be better. E.g. OR Better than…

16. Lot of times, very simple data can be explained through Tables… Brand Performance: 45 days after launch ‘VELVET’ soap ChennaiDelhiMumbai Total Awareness 24%78%40% Trial 8.9%11.1%10.8% Repeat Purchase 1.8%2.2%4.5%

17. 17 Only if you think ‘Keying-out-numbers’, Infographics or Tables are not going to be impactful… MAKE A CHART (OR GRAPH)

18. The process can be summarized in 4 Steps…

19. Types of Charts First of all, think… What are you going to do with the data? You generally do 4 things:

20. Let us put the situations into a Construct

21. A. For Comparing Data It is ideal to use Bar Charts

22. B. Break data into parts Ideally Pie Charts. Stacked Bar or normal Bar charts can also be used

23. B. Break data into parts (Contd.) Ideally Pie Charts. Stacked Bar or normal Bar charts can also be used

24. B. Break data into parts (Contd.) Normal Bar charts can also be used if the number of items are 7 or more…

25. C. See data over time Ideally Line Graph. Area Graphs or normal Bar charts can also be used

26. C. See data over time (Contd.) Ideally Line Graph. Area Graphs or normal Bar charts can also be used

27. Let us put the situations into a Construct

28. D. Breaking data into parts + Comparison of sub-parts Pie charts or Stacked bars… a series of them!

29. D. Breaking data into parts + Comparison of sub-parts Pie charts or Stacked bars… a series of them!

30. E. See data over time + Make Comparisons Multiple Line Graph or Bar Graphs

31. F. Breaking data into parts + See data over time Stacked area Graphs or Stacked Bar Graphs

32. F. Breaking data into parts + See data over time Stacked area Graphs or Stacked Bar Graphs

33. To Summarize…

34. 34  Why is graphical representation important?  A quick Exercise!  Why Charts / Graphs? Different types of graphs… When to use which type  Best practices and some guidelines  A detailed take-home Exercise Agenda

35. 35  Total Population of Thailand: 65,124,716  Total mobile telephony service subscribers: 97,680,775  Total Fixed line subscribers: 5,804,018  Broadband penetration (per Population): 8.2%  Broadband penetration (per Households): 27.4% Exercise: Some data on Thailand, in general, and Thailand Mobile, Internet Market

36. 36  There are 5 cellular service providers in Thailand. Their market shares are as follows: AIS: 46.5%, DTAC: 28.5%, Truemove: 24.3% CAT: 0.2%, TOT: 0.6%  Average spent of a pre-paid customers: 341 Baht per months  Average spent of a post-paid customers: 716 Baht per months (Contd.)

37. Growth of mobile telephony services: Thailand ALL USERSPOST-PAID USERSPRE-PAID USERS

38. 38  Use maximum of 3 slides to present this data. You may talk about anything related to Thailand population, its mobile and internet usage  You may write-out-the-data, give infographics, give Tables and/or create Charts/Graphs Exercise!!!

39. gugkjg http://sixminutes.dlugan.com/six-simple-techniques- for-presenting-data-hans-rosling-ted-2006/