CHAPTER 4 Name

20. The mean of this distribution (don't try to find it) is certainly(a) very close to the median.(b) clearly less than the median.(c) clearly greater than the median. (d) can't say because the mean is random.21. Based on the shape of this distribution, what numerical measures would best describe it?(a) the five-number summary.(b) the mean and standard deviation.(c) the mean and the quartiles.(d) the mean and the correlation coefficient.22. To display the distribution of the lengths in inches of a sample of brook trout, you could use(a) a stemplot. (b) a pie chart. (c) a line plot.(d) Either (a) or (b). (e) Any of (a), (b), or (c).23. Which of these is not true of the mean of the lengths in inches of a sample of brook trout?(a) must take a value greater than 0.(b)(c)is measured in inches.would not change if we measured these trout in centimeters instead of inches.(d) Both (b) and (c).(e) Both (a) and (c).24. Which of these is not true of the standard deviation s of the lengths in inches of a sample of brook trout?(a) s must take a value between -1 and 1.(b) s is measured in inches.(c) s would not change if we measured these trout in centimeters instead of inches.(d) Both (b) and (c).(e) Both (a) and (c).25. A stemplot is(a) the same as a boxplot(b) a part of a small tree(c) a picture of a distribution(d) the same as a histogram(e) useful for describing categorical variables26. An outlier will usually have a large effect on the(a) first quartile (b) mean (c) third quartile (d) median (e) sample size27. Fifty percent of the observations will be at or above the(a) maximum (b) mean (c) median (d) third quartile28. For a distribution that is skewed to the left, usually(a) the mean will be larger than the median(b) the median will be larger than the mean(c) the first quartile will be larger than the third quartile(d) the standard deviation will be negative(e) the minimum will be larger than the maximum