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Chris K

I know this is all for fun, but let's remember that for a given movie there are actually multiple posters. There are pre-release "teaser" posters as well as different versions for different markets.

junkcharts

Chris: you beat me to it. i have a comment on this in my next post.

Ken

This is a good example of how it is essential to understand the data. I remember a colleagues data from some years ago, a time series of pollution data. When plotted there was a consistent pattern of missing data, which resulted from them removing observations which were outside the calibration range of the sensor. One way of getting the average down.

TBW

Isn't this true of much of the data that would be used in climate models ? Historical data either wasn't measured(if you go back far enough) or was measured very differently(for more recent data). I know you can use ice cores and tree rings, etc to get a picture of what the climate was like before we started keeping records, but that is all computed or modeled data, right ? How have climate scientists addressed this? Have they used ice cores and tree rings from the last 30 years to calibrate their models of how that data corresponds to global temperature? No matter how carefully they have, the resulting historical data can't be anything other than an estimation, a range of what the temperature might have been? So, then when you try to build a climate model using that data do you effectively randomly sample your confidence interval of what the temps were at any particular point in time? Or do they just take the mean or median value of the interval and use that as THE value ? Just wondering....

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