Which one of the following statistics would be affected by an outlier?

Which one of the following statistics would be affected by an outlier?
 a. Median
  b. Standard deviation
  c. Lower quartile
  d. Upper quartile

Q. 2

Which one of these statistics is unaffected by outliers?
 a. Interquartile range
  b. Mean
  c. Standard deviation
  d. Range

Q. 3

Which statistic is not resistant to an outlier in the data?
 a. Lower quartile
  b. Upper quartile
  c. Median
  d. Mean

Q. 4

An outlier is a data value that
 a. is larger than 1 million.
  b. equals the minimum value in a set of data.
  c. equals the maximum value in a set of data.
  d. is not consistent with the bulk of the data.

Q. 5

If an exam was worth 100 points, and your score was at the 80th percentile, then
 a. your score was 80 out of 100.
  b. 80 of the class had scores at or above your score.
  c. 20 of the class had scores at or above your score.
  d. 20 of the class had scores at or below your score.

Q. 6

Which of the following would indicate that a dataset is skewed to the right?
 a. The interquartile range is larger than the range.
  b. The range is larger than the interquartile range.
  c. The mean is much larger than the median.
  d. The mean is much smaller than the median.

Q. 7

Which one of the following statements is most correct about a skewed dataset?
 a. The mean and median will usually be different.
  b. The mean and median will usually be the same.
  c. The mean will always be higher than the median.
  d. Whether the mean and median are the same depends on whether the data set is skewed to the right or to the left.