railway RPF SI Mock Test Series 2024 Quantitative Aptitude Standard Deviation

यदि एक जनसंख्या का मानक विचलन 12 है, तो जनसंख्या का प्रसरण क्या होगा?

A. 144

B. 24

C. 72

D. 36

1
B
2
C
3
D
4
A
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