Experts prefer the term "failed suicide attempt" to "parasuicide."

One difference between the Big Five and the Five-Factor Model is that

a) only the Five-Factor Model was derived through the use of factor analysis. b) the Big Five is based on experimental studies, whereas the Five-Factor Model is based on language studies. c) the Big Five simply provides a description of the factors, whereas the Five-Factor Model provides an interpretation of the factors. d) the Big Five suggests that factor differences are due to genetics and are stable over time; the Five-Factor Model makes no such claims.

Which of the following accurately describes the chi-square distribution?

A) ?symmetrical with a mean of zero B) ?positively skewed with all values greater than or equal to zero C) ?negatively skewed with all values greater than or equal to zero D) ?symmetrical with a mean equal to n - 1