Which of the following statements is true?
A. the standard deviation can take a negative value
B. the variance and standard deviation are always appropriate descriptive measures for any set of continuous or scale data
C. the variance and standard deviation are measures of spread or dispersion
D. if each of a set of scores is multiplied by a constant, the value of the standard deviation increases fourfold
Answer:C
Which of the following statements is true?
A. the standard deviation can take a negative value B. the variance and standard deviation are always appropriate descriptive measures for any set of continuous or scale data C. the variance and standard deviation are measures of spread or dispersion D. if each of a set of scores is multiplied by a constant, the value of the standard deviation increases fourfold