RRB NTPC CBT-1 previous year question
The frequency distribution of the hourly wages rate of 100 employees of a paper mill is follows. Find the median wage rate (in ₹). Wages rate(in₹) 54-56 56-58 58-60 60-62 62-64 Number of workers 20 20 20 20 20
Asked in RRB NTPC 2026 — 18 June Shift 3 · Quantitative Aptitude
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Correct answer: (C) 59
Cumulative frequencies are 20,40,60,80,100. Since N/2=50 falls in the class 58-60, using Median = L+[(N/2-CF)/f]xh with L=58, CF=40, f=20, h=2: Median = 58+[(50-40)/20]x2 = 59.
हिंदी में प्रश्न
एक पेपर मिल के 100 कर्मचारियों की प्रति घंटा मजदूरी दर का बारंबारता dea नीचे दिया गया है। माध्यिका मजदूरी दर (हमें) MT मजदूरी दर ( में) 54 56 56 58 58 कर्मचारियों की संख्या 20 20 20 20 20
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सही उत्तर: (C) 56.8
संचयी बारंबारता 20,40,60,80,100 है। चूँकि N/2=50, वर्ग 58-60 में आता है, Median = L+[(N/2-CF)/f]xh सूत्र में L=58, CF=40, f=20, h=2 रखने पर: Median = 58+[(50-40)/20]x2 = 59।
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