railway RRB Group D Mock Test Series 2024-25 Quantitative Aptitude Elementary Statistics

वितरणाच्या माध्यबद्दल माध्य विचलन शोधा:

आकार 20 21 22 23 24

वारंवारता 6 4 5 1 4

1

1.25

2

2.5

3

3.75

4

4.5

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