Which of the following is variance?
Which of the following describes variance? It is the average of the squared deviations of the observations from the mean.
Which of the following statements about variance is the most accurate?
Answer and Explanation: The correct answer to the given question is option d) is the average of the squared deviations from the mean. The variance of a given data set is determined by taking an average of the squared deviations of every observation from the mean value.
Which statement is true about variance?
All of the above statements are true. Variance is calculated by first finding the differences between the mean and all numbers in the data. The differences calculated should then be made positive by squaring them. In the last step the sum of all the squares is divided by how many numbers were in the data set.
What is not true about variance?
Variance can never be a negative number. Because it is the sum of squares of numbers divided by 1 less than the number of numbers. Squares are never negative, so you could never have the sum of squares being negative, and then when you divided by 1 less than the number of numbers you could never get a negative number.
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