All of the following drugs are stimulants EXCEPT:

According to Dell's theory of speech errors,

a. slips of the tongue occur because each sound can be activated by several different words. b. slips of the tongue tend to involve words from different syntactic categories. c. slips of the tongue occur because people focus too closely on the pragmatics of language. d. slips of the tongue occur because we pay too much attention to word choice.

What does the height of the bars on a histogram indicate?

A) mean B) range C) frequency D) score or value