This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Mathematics Chapter 15 Statistics – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Mathematics Chapter 15 Statistics Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the branch of mathematics that deals with the collection, organization, presentation, analysis, and interpretation of data? A) Algebra. B) Geometry. C) Statistics. D) Trigonometry. Show Answer Correct Answer: C) Statistics. 2. If a number is added to a set that is bigger than the mean. How does this affect the mean? A) Increases. B) Decreases. C) Stays the same. D) None of the above. Show Answer Correct Answer: A) Increases. 3. Which operation is possible only if two matrices have the same dimensions? A) Multiplication. B) Addition. C) Transposition. D) Inversion. Show Answer Correct Answer: B) Addition. 4. To determine if the average plant heights of Group I and Group II are significantly different, which of the following steps should you take? A) Calculate the mean and variance for each group, perform an F-test for equal variances, then use a t-test to compare the means. B) Calculate the sum of heights for each group and compare. C) Only calculate the mean for each group. D) Use a Chi-square test to compare the means. Show Answer Correct Answer: A) Calculate the mean and variance for each group, perform an F-test for equal variances, then use a t-test to compare the means. 5. Find the z-score.Mean = 40Standard Deviation:1.4x = 42 A) 1.43. B) 1.28. C) -1.4. D) 1.24. Show Answer Correct Answer: A) 1.43. 6. Which of the following data result from infinitely many possible values that can be associated with points on a continuous scale in such a way that there are no gaps or interruptions? A) Continuous. B) Discrete. C) Qualitative. D) Quantitative. Show Answer Correct Answer: A) Continuous. 7. Which of the following is used to represent the probability of event $A$ A) $S(A)$. B) $V(A)$. C) $E(A)$. D) $P(A)$. Show Answer Correct Answer: D) $P(A)$. 8. When two pieces of data seem related A) Inductive Reasoning. B) Deductive Reasoning. C) Statistics. D) Prediction. E) Correlation. Show Answer Correct Answer: E) Correlation. 9. What is the purpose of using models in mathematics? A) To create art. B) To simplify complex problems. C) To memorize facts. D) To write stories. Show Answer Correct Answer: B) To simplify complex problems. 10. What is the visual representation of data using rectangles whose widths represent class boundaries and whose lengths/heights represent the frequencies of the intervals? A) Pie chart. B) Line graph. C) Ogive. D) Histogram. Show Answer Correct Answer: D) Histogram. 11. Measurement in heights is a very good example of this scale measurement A) Nominal. B) Ordinal. C) Interval. D) Ratio. Show Answer Correct Answer: D) Ratio. 12. The median of the observations 11, 12, 14, 18, x+2, x+4, 30, 32, 35, 41 arranged in ascending order is 24. Find the value of x. A) 21. B) 22. C) 23. D) 24. Show Answer Correct Answer: A) 21. 13. The standard deviation of a dataset is 4. If each data point in the dataset is multiplied by 2, what is the new standard deviation? A) 2. B) 4. C) 8. D) 16. Show Answer Correct Answer: C) 8. 14. In the formula x = a + h(fiui/fi), for finding the mean of grouped frequency distribution, ui = A) (xi+a)/h. B) H (xi-a). C) (xi-a)/h. D) (a-xi)/h. Show Answer Correct Answer: C) (xi-a)/h. 15. What is the purpose of drawing a histogram of the variable Sepal.width? A) To visualize the distribution of Sepal.width values. B) To calculate the mean of Sepal.width. C) To test the correlation between Sepal.width and Sepal.length. D) To compute the variance of Sepal.width. Show Answer Correct Answer: A) To visualize the distribution of Sepal.width values. 16. How do you find the range for a set of number? A) The biggest number minus the smallest number. B) Add the numbers then divide. C) The smallest number minus the biggest number. D) All of the above. Show Answer Correct Answer: A) The biggest number minus the smallest number. 17. Data in the form of numbers A) Numerical Data. B) Statistics. C) Distribution. D) Outlier. Show Answer Correct Answer: A) Numerical Data. 18. One of the given is a type of Data A) Spacio Temporal Data. B) Socio Level Data. C) Econo Techno Data. D) Psycho Naturo Data. Show Answer Correct Answer: A) Spacio Temporal Data. 19. Statistics is a branch of mathematics that involves ..... A) Collecting data. B) Analysing data. C) Making sense of data. D) All of the above. Show Answer Correct Answer: D) All of the above. 20. Which method is used to find the line of best fit for a set of data? A) Arithmetic mean. B) Least squares regression. C) Box plot. D) Venn diagram. Show Answer Correct Answer: B) Least squares regression. 21. Which of the following is a primary focus of statistical analysis? A) Writing essays. B) Painting pictures. C) Interpreting data. D) Learning languages. Show Answer Correct Answer: C) Interpreting data. 22. It is the most occurring value in a series. A) Mean. B) Median. C) Mode. D) Percentile. Show Answer Correct Answer: C) Mode. 23. If we use the mean to measure the typical value or center of the data, we would use the ..... to measure the variability. A) IQR. B) Median. C) Mean. D) Standard Deviation. Show Answer Correct Answer: D) Standard Deviation. 24. Which of the following data results from either a finite number of possible values or countable number of possible values as 0, or 1, or 2, and so on? A) Continuous. B) Discrete. C) Qualitative. D) Quantitative. Show Answer Correct Answer: B) Discrete. 25. What is the formula for calculating the standard deviation of a set of numbers? A) Sum of the numbers. B) Mean of the numbers. C) Square root of the variance. D) Product of the numbers. Show Answer Correct Answer: C) Square root of the variance. ← PreviousNext →Related QuizzesClass 11 Mathematics Chapter 15 Statistics Quiz 1Class 11 Mathematics Chapter 15 Statistics Quiz 2Class 11 Mathematics Chapter 15 Statistics Quiz 3Class 11 Mathematics Chapter 15 Statistics Quiz 4Class 11 Mathematics Chapter 15 Statistics Quiz 5Class 11 Mathematics Chapter 15 Statistics Quiz 6Class 11 Mathematics Chapter 15 Statistics Quiz 7Class 11 Mathematics Chapter 15 Statistics Quiz 8Class 11 Mathematics Chapter 15 Statistics Quiz 9Class 11 Mathematics Chapter 15 Statistics Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books