Line charts with trend lines are fake news. Here’s why:
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“Hi, I’m Jay Arthur, author of “Lean Six Sigma For Hospitals” and QI Macros [software].
“I was at the Institute for Healthcare Improvement conference, and I go through and I look at all the post-improvement posters that are out there. I saw “Nurse Betty” (that’s what I’m going to call her) and she was standing in front of a poster and she was studying it. She was wearing a nice blue pantsuit [and] comfortable shoes because it’s a lot of walking in these conferences, but she was staring at it like crazy.
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Posted by Jay Arthur in Improvement Insights.
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?
Continue Reading "Line Charts with Trend Lines are often Fake News"
Posted by Jay Arthur in Data Mining, Improvement Insights, Six Sigma.
