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

बंटन के माध्य के बारे में माध्य विचलन ज्ञात कीजिए:

आकार 20 21 22 23 24
बारम्बारता 6 4 5 1 4

1
1.25
2
2.5
3
3.75
4
4.5
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