If the scores of 3 students in a test are 5, 6 and 7, find the standard deviation of their scores
a
\(\frac{2}{3}\)
b
\(\frac{2}{3}\sqrt{3}\)
c
\(\sqrt{\frac{2}{3}}\)
d
\(\sqrt{\frac{3}{2}}\)
Explanation
Correct Option
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