Question 78Asked in BPSC TRE 2.0 (2023) Mathematics and Science Class 6-8

Consider the following frequency distribution : Class interval | Frequencyनिम्नलिखित बारम्बारता बंटन पर विचार कीजिए :

Consider the following frequency distribution : Class interval | Frequency 0–10 | 3 10–20 | 8 20–30 | 16 30–40 | 30 40–50 | 17 50–60 | 4 The median class is
निम्नलिखित बारम्बारता बंटन पर विचार कीजिए : वर्ग अन्तराल | बारम्बारता 0–10 | 3 10–20 | 8 20–30 | 16 30–40 | 30 40–50 | 17 50–60 | 4 माध्यिका वर्ग है
  1. A20–3020–30
  2. B30–4030–40
  3. C40–5040–50
  4. DMore than one of the aboveउपर्युक्त में से एक से अधिक
  5. ENone of the aboveउपर्युक्त में से कोई नहीं
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Correct answer: (B) 30–4030–40

Explanation

Total frequency = 78, so N/2 = 39. Cumulative frequencies are 3, 11, 27, 57, so the median class is 30-40.कुल बारम्बारता = 78, अतः N/2 = 39। संचयी बारम्बारताएँ 3, 11, 27, 57 हैं, इसलिए माध्यिका वर्ग 30-40 है।

From BPSC TRE 2.0 (2023) Mathematics and Science Class 6-8 — Previous Year Paper

This is question 78 of BPSC TRE 2.0 (2023) Mathematics and Science Class 6-8 — Previous Year Paper. See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.