The is a measure of

a. standard deviation; central tendency

b. mean; variation

c. median; central tendency

d. mode; variation

The answer is letter C.

Explanation: Mean, Mode, and Median are measures taken from data sets that can be used to represent the entire set. The tendency of these measures is to result in a central value. For this reason they are called centrality measures.

It is called fashion the most frequent die in a set.

the old way of life was represented by superstition, an angry god, and absolute submission to authority. the thinkers of the age of reason ushered in a new way of thinking. this new way championed the accomplishments of humankind. individuals did not have to accept despair. science and reason could bring happiness and progress. kings did not rule by divine right. they had an obligation to their subjects. europeans pondered the implications for nearly a century. americans put them into practice first.

disorders of the brain include both behavior disorders and other psychiatric illnesses. the primary difference between a behavior disorder and another type of psychiatric disorder is the presence of choice. psychiatric conditions are considered to be involuntary while in behavior disorders, choices are essential.