Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test Quantitative Aptitude Elementary Statistics
If the variance of a data is 121, then the standard deviation of the data is _______.
1
12
2
11
3
31
4
More than one of the above
5
None of the above