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Mathematics - Statistics

Practise 19 BITSAT previous year questions on Statistics, compiled from papers spanning 2009 to 2024. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty BITSAT tests.

Statistics has been asked in 11 of the 16 years of BITSAT papers analysed (2009–2024), with 19 questions in all. 58% of them were easy, 26% moderate and 16% tough. Most of its questions came from 2024, with 4 questions that year. In the last three years (2022–2024) it had 7 questions across 5 papers, about 1.4 per paper.

The chapter's 6 topics are not weighted equally: Statistics (6 questions, 32%), Mean (5 questions, 26%), and Measures of Dispersion (3 questions, 16%) have been asked the most. Over the last five years the most frequent topics have been Mean (3), Relation Between Variance and Mean Deviation (3), and Measures of Dispersion (1). Relation Between Mean, Median and Mode has produced the most tough questions (1).

  1. 1The mean of n items is X . If the first item is increased by 1 , second by 2 and so on, the new mean is :2024 (Memory Based Paper 1)Mean
  2. 2The variance of 20 observations is 5 . If each observation is multiplied by 2 , then the new variance of the resulting observation is2024 (Memory Based Paper 1)Relation Between Variance and Mean Deviation
  3. 3If the function , defined below, is continuous on the interval , then2024 (Memory Based Paper 1)Mean
  4. 4If the variance of the data is and the mean deviation from the median for this data is M , then2024 (Memory Based Paper 2)Relation Between Variance and Mean Deviation
  5. 5Find the mean deviation about the mean for the data2023 (Memory Based Paper 1)Measures of Dispersion
  6. 6The standard deviation of 5 scores is . The value of ' ' is2023 (Memory Based Paper 2)Relation Between Variance and Mean Deviation
  7. 7The mean of five observations is and their variance is . If three of these observations are , and , then the other two are2022Mean
  8. 8The arithmetic mean of a set of observation is X . If each observation is divided by and increased by 10 , then the mean of the new series i2018Mean
  9. 9If the variance of the observations x 1 , x 2 , , x n is 2 , then the variance of x 1 , x 2 , , x n , 0 is2017Measures of Dispersion
  10. 10Coefficient of variation of two distributions are 50 and 60 and their arithmetic means are 30 and 25 , respectively. Difference of their sta2017Measures of Dispersion
  11. 11The arithmetic mean of the data with frequencies is2015Statistics
  12. 12The mean square deviation of a set of n observation about a point is defined as The mean square deviations about -2 and 2 are 18 and 10 resp2015Statistics
  13. 13IfM. D. is 12, the value of S.D. will be2014Statistics
  14. 14If the value of mode and mean is 60 and 66 respectively, then the value of median is2013Statistics
  15. 15Find the variance of the data given below2013Statistics
  16. 16If sample A contains 100 observations 200 and sample B contains 100 obsections 250, then ratio of variance2012Statistics
  17. 17Find the value of \( _{x 0} { { (1+x^2 )}- {1-x^2}}{x^2}\)2010Mean
  18. 18Mean of 25 observations was found to be 78.4. But later on it was found that 96 was misread 69 . The correct mean is2010Relation Between Mean, Median and Mode
  19. 19If: \(p\) Raju is tall and \(q\) : Raju is intelligent, then the symbolic statement \( p q\) means2009Median

Frequently Asked Questions

1.How many questions are available for Statistics?

This chapter includes 19 questions compiled from BITSAT papers spanning 2009 to 2024.

2.Are these questions only from BITSAT, or from other exams too?

These are BITSAT questions specifically for the Statistics chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is Statistics an important chapter for BITSAT Mathematics?

Statistics has appeared in 11 of the 16 years of BITSAT papers covered here, with 19 questions across 13 papers - about one per paper it appears in.

4.What is the difficulty level of Statistics questions in BITSAT?

Of the 19 questions analysed for this chapter, 58% are easy, 26% moderate and 16% tough. 2024 had the most, with 4 questions.

5.Which topics in Statistics should I focus on?

These topics have carried the most weightage in Statistics:

  • Statistics - 6 questions (32%)
  • Mean - 5 questions (26%)
  • Measures of Dispersion - 3 questions (16%)
  • Relation Between Mean, Median and Mode has produced the most tough questions (1).
6.Is Statistics's weightage in BITSAT going up or down?

Across all 13 papers analysed, Statistics has averaged about 1.5 questions per paper. In the last three years (2022–2024), that average has stayed about the same, at about 1.4 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.