UA. PSCH 211: exam 2 chapter 4

Which of the following is useful with data collected with nominal scales?

MODE

In which of the following situations would you be most likely to use the mean as a measure of central tendency?

a) You want to report data on family income so we know how families are doing. b) You want to measure something that has a number of outliers. c) You want to report the a verage weight of airline passengers so that the pilot can estimate the weight of the plane. d) Your boss wants to know what size T - shirts to order for the next company picnic

The best measure of central tendency?

a) is the mean. b) is the median. c) is the mode. d) depends on the data and the question you want to ask..... ANSWER IS D.

The chief disadvantage of the median, when compared to the mean, is that

a) it is less stable than the mean from sample to sample. b) its location cannot be calculated algebraically. c) it is disprop ortionately affected by outliers. d) it has no disadvantages.. ANSWER IS A

if we were interested in studying salaries in the National Basketball Association, the least useful measure of the typical salary would be?

a) the median. b) the mode. c) the range. d) the mean ANSWER IS MEDIAN, MEAN CAN BE AFFECTED BY OUTLIERS.

what is a symmetrical distribution shaped like?

bell curve

Which of the following can be defined algebraically?

both mean and median location

when distribution is symmetric what are always equal?

mean, and median

when distribution is SYMMETRIC and UNIMODAL, what are always equal

mean, median, and mean

On a histogram, which always refers to the highest point on the distribution?

mode

if a store manager wanted to stock the men's clothing department with shirts fitting the most men, which measure of central tendency of men's shirt sizes should be employed?

mode

most commonly used measure of central tendency is?

the mean

The median location is

the position, in an ordered series, occupied by the median