defence exam ITBP (Telecommunication) Head Constable Mock Test 2024 Mathematics Statistics Variance and Standard Deviation
What is the standard deviation of the observations
\(-\sqrt{6}, -\sqrt{5},- \sqrt{4}, -1, 1, \sqrt{4}, \sqrt{5}, \sqrt{6} \ ?\)
1
\(\sqrt{2}\)
2
2
3
\(2\sqrt{2}\)
4
4