Question

The arithmetic mean of 7.6, 6.8, 5.4, 6.4, 7.2, (4)8, 6.6, and 5.8 is

• A. 6.523
• B. 6.345
• C. 6.235
• D. 6.325

Hint:

To calculate the arithmetic mean, add all the numbers and divide by the number of items.

Answer 1

The Correct Option is D

The arithmetic mean is the sum of the numbers divided by the total number of items: \[ \text{Mean} = \frac{7.6 + 6.8 + 5.4 + 6.4 + 7.2 + (4)8 + 6.6 + 5.8}{8} = \frac{5(2)6}{8} = 6.325. \]