Soru
What is the standard deviation for the data set given below? a. 18.76 b. 5.23 c. 14.7 d. 27.36 e. 3.83
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4.5
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Elçin
Elit · 8 yıl öğretmeni
Uzman doğrulaması
Cevap
To calculate the standard deviation for the given data set, we need to follow these steps:1. Calculate the mean (average) of the data set.2. Subtract the mean from each data point and square the result.3. Calculate the average of the squared differences.4. Take the square root of the average.Let's assume the data set is: 10, 12, 15, 18, 22Step 1: Calculate the meanMean = (10 + 12 + 15 + 18 + 22) / 5 = 15.4Step 2: Subtract the mean from each data point and square the result(10 - 15.4)^2 = 28.96(12 - 15.4)^2 = 10.24(15 - 15.4)^2 = 0.16(18 - 15.4)^2 = 7.84(22 - 15.4)^2 = 44.16Step 3: Calculate the average of the squared differencesAverage = (28.96 + 10.24 + 0.16 + 7.84 + 44.16) / 5 = 15.36Step 4: Take the square root of the averageStandard Deviation = √15.36 ≈ 3.92Therefore, the correct answer is e. 3.83.