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Statistics — Mathematics Questions & Practice

74 Statistics questions from Mathematics for competitive exams such as UPSC, Banking, SSC and Railway. Read the worked questions below, check every answer with an explanation, and track what you get wrong. का अभ्यास करें

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Statistics पर अभ्यास प्रश्न — उत्तर सहित

Try each question first, then open the answer. Explanations are included.

1. Find the mean of the numbers 4, 8, 12, 16, 20.

  1. A10
  2. B12
  3. C14
  4. D16
उत्तर दिखाएँ

उत्तर: B

Mean=(4+8+12+16+20)/5=60/5=12.

2. Find the median of the data: 5, 8, 12, 15, 20.

  1. A8
  2. B10
  3. C12
  4. D15
उत्तर दिखाएँ

उत्तर: C

For odd count (5 numbers) arranged in order, the median is the middle value, which is 12.

3. Find the median of the data: 4, 8, 10, 12.

  1. A8
  2. B9
  3. C10
  4. D11
उत्तर दिखाएँ

उत्तर: B

For even count (4 numbers), median=average of two middle values=(8+10)/2=9.

4. Find the mode of the data: 2, 3, 3, 4, 4, 4, 5.

  1. A2
  2. B3
  3. C4
  4. D5
उत्तर दिखाएँ

उत्तर: C

The mode is the most frequently occurring value. Here 4 appears 3 times, more than any other value.

5. What is the range of the data: 12, 25, 8, 34, 19?

  1. A24
  2. B26
  3. C28
  4. D30
उत्तर दिखाएँ

उत्तर: B

Range=Maximum-Minimum=34-8=26.

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