state gov APPSC Group 4 (Pre+Mains) Mock Test 2022 Quantitative Aptitude Elementary Statistics

एक डाटा के सेट का प्रसारण (variance) 81 है, तो डाटा का मानक विचलन ज्ञात कीजिए। 

A. ± 9

B. 9

C. 81

D. 40.5

1
A
2
D
3
B
4
C
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