railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Standard Deviation

The weights of a group of 4 adults are 70 kg, 75 kg, 80 kg, and 85 kg. Find the standard deviation of their weights.

1

6.76 kg

2

5.59 kg

3

4.59 kg

4

3.98 kg

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