The measure of variation that is most affected by outliers is the:
A) range. B) interquartile range.
C) standard deviation. D) variance.
Q. 2Of A-D, which is not a critical part of designing a good experiment?
A) Random selection of subjects
B) Replication of the on a sufficient number of subjects
C) All of these are important.
D) Control of known sources of variability
E) Random assignment of subjects to treatments
Q. 3In a cumulative more than distribution, the classes are labeled using
A) class marks. B) lower class limits. C) upper class limits. D) class boundaries.
Q. 4When no two values are the same, which measure is exceeded by as many values as it exceeds?
A) the median B) the mean C) the first quartile D) the midrange
Q. 5The probability that an individual has 20-20 vision is 0.18. In a class of 18 students, what is the probability of finding five people with 20-20 vision?
A) 0.278 B) 0.000 C) 0.18 D) 0.123
Q. 6A __________ is a random sample in which the sampling units consist of clusters of elements.
A) stratified random sample B) cluster sample
C) systematic sample D) simple random sample
Q. 7The maximin criterion applies only when the payoffs are quantities, such as profits or benefits, which we want
to make large.
Indicate whether the statement is true or false
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