Variance & SD
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Q. The mean of a data set is 10 and the variance is 4. What is the standard deviation? (2019)
Q. The scores of a class in a test are: 10, 12, 14, 16, 18. What is the variance? (2022)
Q. The scores of a test are: 20, 30, 40, 50. Calculate the variance. (2020)
Q. The scores of a test are: 20, 30, 40, 50. What is the standard deviation? (2020)
Q. The scores of five students are: 20, 22, 24, 26, 28. Calculate the variance. (2020)
Q. The scores of five students are: 20, 22, 24, 26, 28. What is the standard deviation? (2020)
Q. The scores of five students are: 20, 22, 24, 26, 28. What is the variance? (2020)
Q. The standard deviation of a data set is 5. If all values are increased by 2, what will be the new standard deviation? (2020)
Q. The standard deviation of a data set is 5. What is the variance? (2023)
Q. The variance of a sample is calculated as 25. What is the standard deviation?
Q. What is the variance of the following numbers: 1, 1, 1, 1, 1?
Q. What is the variance of the following numbers: 1, 2, 3, 4, 5, 6? (2022)
Q. What is the variance of the following numbers: 2, 4, 4, 4, 5, 5, 7, 9?
Q. What is the variance of the following numbers: 5, 5, 5, 5? (2019)
Q. What is the variance of the following numbers: 5, 7, 9, 11? (2020)
Q. What is the variance of the numbers: 1, 1, 1, 1, 1? (2023)
Q. What is the variance of the numbers: 5, 5, 5, 5? (2023)
Q. Which of the following data sets has the highest variance? A: {1, 2, 3}, B: {1, 1, 1}, C: {1, 5, 9}, D: {2, 2, 2}. (2020)
Q. Which of the following statements is true about variance? (2020)
