Normalized data are centered at . . . . . . . . and have units equal to standard deviations of the original data.

0
5
1
10

The correct answer is A. 0.

Normalized data are centered at 0 and have units equal to standard deviations of the original data. This means that the mean of the normalized data is 0 and the standard deviation of the normalized data is 1.

Option B is incorrect because 5 is not the mean of the normalized data.

Option C is incorrect because 1 is not the standard deviation of the normalized data.

Option D is incorrect because 10 is not the mean or the standard deviation of the normalized data.

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