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Just because Excel gave you a trendline doesn't mean you should go with it. Their choice of graph detracts from their argument. They do address confounding var
by CalRobert 8y ago
Just because Excel gave you a trendline doesn't mean you should go with it. Their choice of graph detracts from their argument.
They do address confounding variables a bit but it isn't especially thorough.
- FabHK 8y agoHave you looked at the statistics? Do you think you can glance at a graph and have better insight than someone that has carefully studied the underlying data, including run a regression over it? Do you realise that the trend line slope has a t-stat of 4.36? Did you notice that all lines contained within the 95% confidence interval for the trend are negatively sloped?
- invisible 8y agoThis is an article summarizing a 90+ page paper. It lacks details because it is a summary broadcasting news about a study.