BUAD 213
Midterm Review
30 Questions (13 concept questions, 17 problem-based questions)
Concepts Questions:
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Know what the measures of central tendency are and what the measures of variance are
Know what type of sampling technique would be best if we want to determine how many crows in
your county carried West Nile virus
Know the definition of “bias”
Know what type of graph is best in each circumstance (pie chart, frequency polygon, horizontal
histogram, vertical histogram, stem and leaf plot) – 2 questions
If you are shown a frequency distribution, be able to determine what may be wrong with it
Given a certain example of data, be able to determine what type of data it would fall into (ordinal,
nominal, ratio, or interval)
Be able to identify what is true or false about using a sample vs. a census (population)
Be able to correctly identify an example of each type of sampling: convenience, cluster, stratified,
and systematic
Know what the most basic or simple measure of variance is
Know the definition of a “census”
Know what type of statistic we would use to provide the high and low tolerances for a part in a
production process
Know what the presence of a large outlier in a data set would do to the relationship between the
mean and median
Problem-based questions
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Be able to calculate the Poisson probability (exact number) – in Excel =POISSON.DIST(x, mean, 0) –
2 questions
Be able to calculate the Poisson probability (more than a certain number) – in Excel
=POISSON.DIST(x, mean, 1), then subtract from 1
Be able to calculate the probability of pulling a defective part given the number of parts and the
number of defective parts in a sample
Given the number in a sample and the probability of success, be able to calculate the mean of a
bionomical distribution
Given population data (7 numbers), be able to find the mean, variance, standard deviation, and
range
Given sample data (7 numbers), be able to find the outlier, midrange, variance, and standard
deviation
Be able to calculate the mean of a probability distribution
Given the mean and standard deviation of a data set, be able to use Chebyshev’s theorem to
determine the range in which at least 88.89% of data values will be found
Given the average and standard deviation, be able to use the empirical formula to determine the
range where 95% of the data will be found
Given the probability of success and the number of sample, be able to use the binomial distribution
to find the probability of exactly a certain number of successes will be found. In Excel,
=BINOM.DIST(number_s, trials, probability_s, 0)
BUAD 213
Midterm Review
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Be able to find the standard deviation of a probability distribution
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Be able to solve a problem like the following:
In a hospital unit there are 8 nurses and 5 physicians; 7 nurses and 3 physicians are females. If a
staff is selected, find the probability that the subject is a nurse or a male.
The events are not mutually exclusive and the sample space is:
Staff
Nurses
Physicians
Total
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Female
7
3
10
Male
1
2
3
Total
8
5
13
Given the probability of success and the number of sample, be able to use the binomial distribution
to find the probability of at least a certain number of successes will be found. In Excel, with
number_s being one less than the “at least” number above,
=BINOM.DIST(number_s, trials, probability_s, 1), then subtract this value from 1
Given the probability of success and the number of sample, be able to use the binomial distribution
to find the probability of less than a certain number of successes will be found. In Excel,
=BINOM.DIST(number_s, trials, probability_s, 1) with number_s being one less than the “less than”
number above.
Given a standard deck of cards, be able to calculate the probability of drawing a queen on the first
draw and then another queen on the second draw, without replacement.
Given sample data (6 numbers), be able to find the range, median, mean, and mode