Question

15. Which of the following is not a measure of location?

(a) mean (b) median (c) variance (d) percentile (e) quartile

16. Which of the following statements is false?

(a) the median is a measure of central tendency

(b) quartiles are not measures of central tendency

(c) the 50th percentile is the median

(d) an extreme value is likely to have a greater effect on the median than the mean

(e) the 25th percentile is the first quartile (Q1)

Indicate which of the following is a parameter and which is a statistic:

___ ___ 17) sample mean

___ ___ 18) population standard deviation

___ ___ 19) sample standard deviation

___ ___ 20) population variance

___ ___ 21) population median

___ ___ 22) population mean

For each of the following, indicate the appropriate statistical measures that may be used for analysis (e.g., proportions, median, quantiles, mode, mean, ...). List as many as are appropriate.

23) For data measured on a nominal scale, you may use: ___________________________

24) For data measured on an ordinal scale, you may use: ___________________________

25) For data measured on an interval scale, you may use: ___________________________

Answer 1

15)  variance is not a measure of location

16) an extreme value is likely to have a greater effect on the median than the mean

17) sample mean-Statistic

population standard deviation-Parameter

sample standard deviation-Statistic

population variance-Parameter