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Line Charts with Trend Lines are often Fake News

Ever seen a line chart with a trend line that implies there was great improvement? Probably not. Here’s why:

“Hi, I’m Jay Arthur, author of “Lean Six Sigma For Hospitals” and QI Macros [software].

“If you’re listening to anything in the news, they always talk about “fake news,” right? Fake news: somebody made stuff up. But in my experience, when I’m wandering around [seeing] all of these presentations and poster presentations at trade shows and stuff, I keep seeing all these line charts with trend lines in them. “Oh look! We have a trend line! It’s reducing whatever it is,” right?

Posted by Jay Arthur in Data Mining, Improvement Insights, Six Sigma.