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Data analysis and statistics MCQs

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1. : What is the primary purpose of data analysis in research?





2. : What does mean represent in statistics?





3. : What is the median?





4. : The mode is:





5. : The range of a dataset is:





6. : Which of the following is a measure of dispersion?





7. : Variance is:





8. : Which of the following graphs is used to represent frequency distribution?





9. : Which type of data uses numbers with equal intervals but no true zero?





10. : Data that can be classified into categories without order is called:





11. : Which level of measurement includes a true zero point?





12. : Which of the following is a non-parametric test?





13. : The t-test is used to:





14. : The ANOVA (Analysis of Variance) test is used to:





15. : Which statistical test is used to determine the relationship between two variables?





16. : A positive correlation means:





17. : A correlation coefficient (r) ranges between:





18. : If r = 0, it indicates:





19. : Regression analysis is used to:





20. : In statistics, outliers are:





21. : A null hypothesis (H₀) states that:





22. : The p-value in hypothesis testing indicates:





23. : A result is considered statistically significant if:





24. : The standard error measures:





25. : A frequency table shows:





26. : Which of the following is not a graphical representation of data?





27. : Which of the following best describes descriptive statistics?





28. : Inferential statistics are used to:





29. : The normal distribution curve is:





30. : A skewed distribution means:





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