Is a chart lying to you? This video has some tips to figure it out.

Latest news

    Graphs are supposed to distill complex information. But sometimes they can mislead.

    We love graphs because they can convey facts so well. So it’s a bit concerning that these visualizations can sometimes be used to lie to you.

    A new TED-Ed video by Lea Gaslowitz walks through how, exactly, graphs can mislead you. It comes down to one basic lesson: Pay attention to the graph’s labels.

    “When they’re used well, graphs can help us intuitively grasp complex data,” Gaslowitz says. “But as visual software has enabled more usage of graphs throughout all media, it’s also made them easier to use in a careless or dishonest way.”

    As one example, the video points to this misleading chart that Chevrolet used in an advertisement to claim that more than 98 percent of Chevy trucks sold in the past 10 years are still on the road, far dwarfing the carmaker’s competition:

    A chart used by Chevrolet in a car advertisement.TED-ED

    At first glance, it sure looks like Chevrolet is doing well on this score. In fact, it seems to be doing twice as well as Toyota, and far better than Nissan.

    But look at the label for the y-axis. By making the graph start at 95 percent, Chevrolet made what’s actually a difference of a few percentage points seem like a much bigger deal.

    To show just how misleading this graph is, check out how it would look if the y-axis started at 0 percent:

    A chart of how long people keep their cars, by brand.TED-Ed

    Really not much of a difference.

    “This is one of the most common ways graphs misrepresent data — by distorting the scale,” Gaslowitz explains. “Zooming in on a small portion of the y-axis exaggerates a barely detectable difference between the things being compared.”

    The video goes through a few more examples, showing manipulation not just of the y-axis but the x-axis and other labels too.

    View the original article:

    Gaslowitz ends with some advice: “The next time you see a graph, don’t be swayed by the lines and curves. Look at the labels, the numbers, the scale, and the context. And ask what story the picture is trying to tell.”

    In the same category are

    Mick Mulvaney changed the CFPB’s sign to BCFP Mulvaney wants you to know it’s the Bureau of Consumer Financial Protection. Mick Mulvaney is not above making even the pettiest of changes at the Co...
    CEOs could tame Trump, if they wanted to From the night of his election until roughly mid-afternoon on Wednesday, business leaders tiptoed quietly around Donald Trump. They soft-pedaled thei...
    Baltimore removed all 4 of its Confederate statues overnight In a stunningly swift move, Baltimore removed all four of its Confederate statues in the middle of the night Tuesday, only one day after the removal ...
    “Barack Obama is to blame”: 13 Alabama conservatives on Charlottesville DECATUR, Alabama — Several Alabama voters blame President Barack Obama for the white supremacist violence in Charlottesville this weekend because, th...
    Game of Thrones season 7: (Spoiler)’s return, that letter, and that dragon-petting, explained Here’s how “Eastwatch” called back to earlier episodes. Spoilers follow for Game of Thrones season seven, episode five, “Eastwatch.” After the spec...
    Car in Charlottesville plows into anti-racism protesters: what we know The car rammed into a crowd of people who protested against white nationalists earlier in the day. A driver in a silver Dodge Challenger on Saturday ...

    Leave a comment

    Your email address will not be published. Required fields are marked *

    This site uses Akismet to reduce spam. Learn how your comment data is processed.