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The total marks scored by two students Sathya and Vidhya in 5 subjects are 460 and 480 with standard deviation 4.6 and 2.4 respectively.

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The total marks scored by two students Sathya and Vidhya in 5 subjects are 460 and 480 with standard deviation 4.6 and 2.4 respectively. Who is more consistent in performance?

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x \(d=x-\bar{x}\) d2
38 -7 49
40 -5 25
47 2 4
44 -1 1
46 1 1
43 -2 4
49 4 16
53 8 64
360 0 164

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