The mean can be a misleading measure of central tendency when:
a. the distribution is very close together
b. the distribution is very spread apart
c. the mean, median and mode equal zero
d. none of the above, the mean is never misleading
Which of the following may not constitute voluntary participation?
a. give students who complete the research questionnaire extra credit
b. allow students to fill out a questionnaire on their own time and when they finish put
them in a box outside the
departmental secretary’s office
c. ask that students fill out a questionnaire and not include their name or student
identification number
d. on in-class questionnaires have the professor leave the room while they are being
filled out and turned in and allow students to remain anonymous
A lower-level measure cannot be converted to a higher-level one.