railway RRB Technician Grade 1 Mock Test 2024 Quantitative Aptitude Elementary Statistics

Mean and standard deviation of 100 items are 50 and 4, respectively. Find the sum of all the item and the sum of the squares of the items.

1
1000, 50320
2
5000, 251600
3
3000, 150960
4
4000, 201280
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