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

प्रेक्षणों 13, 21, 17, 12, 15, 19, 19, 12, 20, 25 और 17 के परिसर और माध्यिका का माध्य है? 

1
15
2
16
3
15.5
4
16.5
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