Question

Graduate Management Aptitude Test (GMAT) scores are widely used by graduate schools of business as an entrance requirement. Suppose that in one particular year, the mean score for the GMAT was 476, with a standard deviation of 107.

What values are two standard deviations above and below the mean?

Answer 1

(262, 690)

Explanation:

Given that :

Mean score = 476

Standard deviation, s = 107

2 standard deviations above and below the mean :

Mean ± 2s

Hence,

2 standard deviations below :

476 - 2(107)

476 - 214 = 262

2 standard deviations above

476 + 2(107)

476 + 214 = 690