Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Education Research in Education Measurement and Analysis of Data

दिए गए अंक वितरण 12, 14, 16, 18 और 20 में वर्ग विचलन का योग _____ है।

1
12
2
24
3
40
4
शून्य
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