Question 9 • CARE_24_25_TX-Mathematical Models with Applications B
The mean of 2, 4, 6, 8, and 10 is 6. Their squared deviations from the mean are 16, 4, 0, 4, and 16, which sum to 40. For the standard deviation of this data set, divide by 5 to get a variance of 8, then take the square root: √8 ≈ 2.83. The best answer is choice A, 2.83.
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