Question

You have a mean of 56 and a standard deviation of 4.3. What is +2 standard deviations from the mean?

a) 60.3
b) 51.7
c) 47.4
d) 64.6

Answer 1

To calculate +2 standard deviations from the mean, you add twice the standard deviation to the mean. For a mean of 56 and a standard deviation of 4.3, +2 standard deviations is 64.6.

Step-by-step explanation:

To find +2 standard deviations from the mean, we take the mean and add two times the standard deviation. Given that the mean is 56 and the standard deviation is 4.3, the calculation would be:

Mean + (2 × Standard Deviation) = 56 + (2 × 4.3) = 56 + 8.6 = 64.6.

Therefore, +2 standard deviations from the mean is 64.6.