Seven Tips for Communicating Data

Written by Lynn Gaertner-Johnston, Syntax Training

After you have worked hard to collect meaningful data, the big challenges are how and how much to communicate. Consider these tips when you work on your next report or presentation that includes data. 

  1. Focus first on your message, not on the numbers.
    When planning your communication, focus first on the big idea or points you want to make. Then incorporate the data that will help your audience understand and appreciate your points. Be sure your big idea gets center stage, not the numbers.
  2. Explain the data.
    Numbers mean nothing on their own. They need interpretation. Avoid asking readers or your audience to “review the attached spreadsheets.” Why should they review them? Which numbers should they pay attention to and why? What do the numbers indicate?
  3. Put data in context.
    Make it clear whether numbers are positive, negative, or neutral. If you tell a sales rep that she visited an average of six prospects per day, compare that number to the goal number of prospects. If a client walks 5500 steps in a day, state whether 5500 is the magic healthy number or only halfway there. If expenses are 18 percent over income, say why the reader should care. Explain that the account balance will be €0 by 2018 if nothing changes.
  4. Paint a picture with your numbers so people can see them.
    Even simple expressions like “a tenfold increase” or “a 30 percent drop” can seem vague unless your audience can see them. If numbers have decreased dramatically over a decade, do not use words and numbers alone. In a bold-colored graph, show the deep drop year by year, month by month over 10 years.


If your numbers are so large as to be abstract, paint them in recognizable mental pictures such as an area as large as Italy or a distance of 100 Greyhound buses. (Think of your audience when you choose the image.) How hot is 158 degrees Fahrenheit? Hot enough to fry an egg on the sidewalk. 

Or show the numbers reduced to their essence. Jack Hagley’s graphic “The World as 100 People” ( presents the world as though it were only 100 people. For instance, 83 of the world’s 100 people are able to read and write; 17 are not.


  1. Highlight important numbers.
    A wall of numbers is as intimidating as a wall of text. Pull out essential numbers and focus on them. If you are presenting financial data, show just a small portion of it at a time on a slide or a page–just the portion you are discussing now. If you refer to and show just a small part, your audience will not say, “Where are you?” and “What are you talking about?” And always render numbers in a large enough font that you do not have to apologize for it.

Make it easy for your readers to find important numbers. If a client has asked for your fee, for example, don’t bury the number in a paragraph. Instead, render the number alone on a line or as part of a short heading, like this:

Your investment: US$19,000


  1. Prominently display the legends for tables and charts of numbers.
    Ensure that your audience will know instantly that 3000 indicates 3,000,000 and that your balance is positive rather than negative. Use abbreviations such as K and M only if you are certain your readers understand them. (To some people, M means thousand; to others, it means million.)
  2. Use only the essential, compelling numbers in the body of your document.
    If numbers weigh down your document, your readers may forget your main point. So move most of the supporting tables, lists, charts, and graphs to the appendices. In a presentation, hold back some slides of data, and show them only upon request. Remember: The numbers are not the message; they serve the message.

If you think of your communication as music, your most important message comes through the soloist. The numbers are the accompanists. They play an essential role, but they should never drown out the soloist. If they do, your communication will not reach and change your audience.



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