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Let me me correct my statement. More data does not necessarily lead to better prediction. I must add that it is not always about usage as well. In some cases, t
by denzil_correa 14y ago
Let me me correct my statement. More data does not necessarily lead to better prediction. I must add that it is not always about usage as well. In some cases, the data is insufficient to make any kind of prediction.
- dbaupp 14y agoThe only data that is insufficient to make a prediction is either no data at all, or data suspected to be wrong (e.g. faulty observation equipment). Even given a single sample, one can make a prediction of what the next observation will be: the same value. Once you get more samples and more knowledge about the subject, you can bring stronger statistical tools to bear to get error estimates, prediction intervals, improved models, etc.
- denzil_correa 14y ago> Once you get more samples and more knowledge about the subject, you can bring stronger statistical tools to bear to get error estimates, prediction intervals, improved models, etc Like I said earlier, increase in data does not always lead to improved models.
- pfortuny 14y agoIf you have enough data, you have a census and then there is no model, just reality... In polls like this, the more data the better as long as it is unbiased (i.e. as long as it is DATA).