The WAIS has a mean of __________ and a standard deviation of __________.
A. 20; 5
B. 75; 10
C. 100; 15
D. 125; 30
To determine the correct answer, we need to know what the WAIS refers to first. The WAIS stands for the Wechsler Adult Intelligence Scale, which is a commonly used intelligence test for adults. The mean and standard deviation of the WAIS scores can vary, so we cannot determine the exact values without more information.
Typically, the mean score of a standardized test is set to 100, and the standard deviation is set to 15. However, this may not always be the case for every version or administration of the WAIS. The test may have been normed on a different population with different mean and standard deviation values.
Therefore, to find the mean and standard deviation of the WAIS, we would need to consult the test's manual or research the specific version of the WAIS being referred to in order to obtain the accurate values. Once we have that information, we can compare it to the answer choices provided and determine the correct option.