The better set of data is data that is presented to the correct number of significant figures. My friends's data is better.
In order to decide whose data is better, we need to consider the value of the lowest measurement in grams.
The lowest measurement in grams is the value 0.001 gram. This means that all mass measurements in grams fall within ±0.001 gram.
Hence, my friends data is better than my own because the values were reported to in a greater number of significant figures than my own.
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