Gauhati University BCom 3rd Semester
Business Statistics NEP FYUGP
Most Important Questions For Exam
Unit I – Statistical Data and Descriptive Statistics
Two-mark Theory Questions
1. What are primary data? [2013, 2014]
2. Write the empirical relationship among mean, median and mode. [2014]
3. Mention two advantages of sample survey over census survey. [2012]
4. Give one application each of median and mode. [2016]
5. What do you mean by skewness? [2012, 2024]
6. What is kurtosis? [2013]
7. Distinguish between absolute and relative measures of dispersion. [2017]
8. State two properties of correlation coefficient. [Multiple years]
9. Write any two characteristics of a good average. [2022]
Five-mark or Ten-mark Theory Questions
1. Write a note on the importance of diagrams in statistics. [2012]
2. Explain use of diagrams in presenting statistical data. [2013]
3. Write a note on a pie-diagram. [2014]
4. Diagrammatic representation: definition and brief note. [2016]
Unit II – Probability and Probability Distributions
Two-mark Theory Questions (with years)
1. What is Type-I error? [2012, 2013]
2. What is Type-II error? [asked with Type-I in multiple years]
3. What do you mean by mathematical expectation? [multiple years]
4. Define probability distribution of a random variable. [2014]
5. Define random experiment. [2022]
6. Define trial and event. [2022]
7. What is level of significance? [2013, 2014, 2015]
8. What is mathematical probability? Mention drawbacks. [2024]
9. If A and B are not mutually exclusive, find P(A ∩ B) (concept theoretical part). [2024]
Five-mark and Ten-mark Theory Questions
1. Write the properties of binomial distribution. [2013, 2021]
2. What is binomial distribution? Mention its properties. [2013, 2015, 2017, 2021]
3. What is Poisson distribution? Give examples. [2016, 2017, 2021]
4. Under what conditions is binomial distribution approximated by Poisson distribution?
[2016, 2017]
5. Explain mathematical expectation; find E(X) & Var(X) (theory part). [2015, 2017, 2021]
Unit III – Simple Correlation and Regression Analysis
Two-mark Theory Questions
1. Mention two properties of correlation coefficient. [2013, 2014, 2017, 2021]
2. Define skewness.
3. State two essential points while drafting a questionnaire.
4. What do you mean by correlation between two variables? [2015]
5. Why are there two regression lines for two correlated variables? [2015]
6. Define regression. [2014, 2015]
7. Distinguish between parameter and statistic. [2017]
Five-mark and Ten-mark Theory Questions
Correlation – Theory
1. Interpret correlation values r = –1, r = 0, r = +1. [2021, 2023]
2. What do you mean by a scatter diagram? How does it help? [2023]
3. Write a note on Karl Pearson’s coefficient of correlation. [2014]
4. What are the types of correlation? With examples. [2015, 2023]
5. What do you mean by correlation between two variables? Explain types. [2024]
Regression – Theory
6. Explain the concept of regression. [2014, 2015]
7. What is a regression line? What purpose does it serve? When are the two regression lines identical? [2021]
8. Fit a straight-line trend by least squares (theory explanation part). [2015, 2016, 2017]
Unit IV – Sampling, Estimation and Hypothesis Testing
Two-mark Theory Questions
1. What is sampling? [Multiple years]
2. Distinguish between census and sample survey. [2012, 2013, 2015, 2022]
3. Mention two situations where census survey is a must. [2013]
4. What is level of significance? [2013, 2014, 2015]
5. Define null hypothesis. [2012, 2014, 2024]
6. What is alternative hypothesis? (asked along with null)
7. What is sampling distribution? [2021, 2023]
8. What is simple random sampling? [2024]
9. State the factor reversal test. [2023]
10. What do you mean by estimation? [2021]
11. Distinguish between parameter and statistic. [2017]
12. Write two properties of a good estimator. [2021]
13. What do you mean by Type-I and Type-II errors? [2013, 2015]
14. What are the different kinds of errors associated with tests of significance? [2024]
Five-mark and Ten-mark Theory Questions
Sampling & Estimation – Theory
1. What is a sample survey? Write advantages and disadvantages. [2013, 2015, 2017, 2021, 2023, 2024]
2. Explain simple random sampling: its advantages and disadvantages.b[2024]
3. What is sampling distribution? Explain.
[2024]
4. What is an estimator? Explain characteristics of a good estimator. [2021]
5. Difference between primary and secondary data & methods of collecting primary data. [2013, 2014]
6. Different methods of sampling (random, stratified, systematic). [Multiple years]
Hypothesis Testing – Theory
7. Explain Type-I and Type-II errors in hypothesis testing. [2012, 2015, 2017, 2022]
8. What is a test of significance? Explain steps in testing a hypothesis. [2021, 2023]
9. Define null and alternative hypothesis; explain. [2012, 2014, 2021, 2023, 2024]
10. Describe procedures of testing a hypothesis. [2023]
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