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newprice
2012 Dec 13
3
how to aggregate the dataset
HI,
Sorry for messing up..
I want to transform the following dataset:
product min_price max_price mean_price country price_band
11 34 50 40 VN 0-300
22 10 30 15 VN 0-300
Into:
product VN price_band
11 40 0-300
[34,50]
22 15
2004 Sep 01
3
Imputing missing values
Dear all,
Apologies for this beginner's question. I have a
variable Price, which is associated with factors
Season and Crop, each of which have several levels.
The Price variable contains missing values (NA), which
I want to substitute by the mean of the remaining
(non-NA) Price values of the same Season-Crop
combination of levels.
Price Crop Season
10 Rice Summer
12