RRB NTPC CBT-1 previous year question
Find the mode for the following distribution. CL 40-45 45-50 50-55 55-60 60-65 65-70 70-75 75- Frequency 4 4 13 5 6 5 2 1
Asked in RRB NTPC 2026 — 18 June Shift 2 · Quantitative Aptitude
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Correct answer: (C) 52.65
The modal class (highest frequency 13) is 50-55. Using Mode = L + [(f1-f0)/(2f1-f0-f2)] x h with L=50, f1=13, f0=4, f2=5, h=5: Mode = 50 + (9/17) x 5 = 52.65.
हिंदी में प्रश्न
निम्नलिखित बंटन का बहुलक ज्ञात कीजिए। 7 CL 40 45 45 50 50 55 55 60 बारंबारता 4 4 13 5 6 5 2
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उत्तर और व्याख्या देखें
सही उत्तर: (C) 51.34
बहुलक वर्ग (सर्वाधिक बारंबारता 13) 50-55 है। Mode = L + [(f1-f0)/(2f1-f0-f2)] x h सूत्र में L=50, f1=13, f0=4, f2=5, h=5 रखने पर: Mode = 50 + (9/17) x 5 = 52.65।
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