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r38829
2010 Dec 08
1
sd() for numeric row entries
How might one calculate standard deviation, row-wise, for the numeric values in a data frame such as this one
V1 V2 V3 V4 V5
1 rs11089130 0.4565 0.4574 0.4569 0.4572
2 rs738829 0.6548 0.6519 0.6448 0.6549
3 rs915674 0.7503 0.7500 0.7517 0.7502
and place the standard deviation in a 6th column called “std_dev”?
Regards,
Jim
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