Which of the following statements about a weighted mean is true?
A. The weighted mean is always equal to the arithmetic mean.
B. The weighted mean can only be reported if the sample size is equal in each group.
C. The weighted mean is used to compute the combined mean for two or more samples of scores in which the number of scores in each sample is disproportionate or unequal.
D. The weighted mean is heavier than an arithmetic mean.
Ans: C
You might also like to view...
A researcher wants to determine how citizens of Indianapolis feel about the mayor's proposed changes for the Indianapolis public school system. Which of the following sampling procedures would you recommend to this researcher?
a. Insert a questionnaire in the magazine, Indianapolis Monthly, and ask readers to complete and return the questionnaire. b. Procure a list of voters from the city clerk's office and draw a random sample to receive the questionnaire. c. Draw a random sample from the Indianapolis telephone directory to receive the questionnaire. d. Take a random sample of 100 blocks from a city map and interview all the adults in those blocks.
What is the value of knowing about the phases and steps for a job search?
Transferable skills are the kinds of abilities that help people thrive in any job no matter what work-content skills they have
A. True B. False
Teachers can take the time to get to know their students through a variety of activities. One activity that consists of a series of questions geared for a particular age group is known as ______.
a. background experiences b. interest inventory c. fostering positive relationships d. social goals