mean > median is skewed ______ - Correct Ans-right
median > mean is skewed _____ - Correct Ans-left
unimodal and symmetric distributions follow the __________ rule - Correct Ans-empirical
When should you choose a boxplot over a histogram?
When you want to make ________ ______ ______...
mgsc 291 exam 1 study questions and
answers 2025
mean > median is skewed ______ - Correct Ans-right
median > mean is skewed _____ - Correct Ans-left
unimodal and symmetric distributions follow the __________ rule - Correct Ans-
empirical
When should you choose a boxplot over a histogram?
When you want to make ________ ______ ______ comparisons - Correct Ans-side by
side
which graphical display is best for showing change over time? - Correct Ans-line graph
Which measure of center can be used for a categorical (qualitative) random variable? -
Correct Ans-mode
If an observation is added to the low end of a distribution, the standard deviation -
Correct Ans-increases
If an observation is added to the high end of a distribution, the standard deviation -
Correct Ans-increases
The standard deviation expressed as a percent of the mean is ________ _______
___________. it allows you to compare variation in datasets with different units or
means - Correct Ans-coefficient of variation
two events are ______ if they share no outcomes in common - Correct Ans-disjoint
P (A and B) = P (A|B)* P (B) - Correct Ans-multiplication rule
fail/success is a _________ distribution - Correct Ans-binomial
1-pbinom(8,n,pi)
is the probability that _______ than __ - Correct Ans-more;8
pbinom(6,n,pi)
is the probability that _____ than __ - Correct Ans-less;7
dbinom(7,n,pi)
, is the probability that _________ __ - Correct Ans-exactly;7
pnorm(86,mean,SD)-pnorm(15,mean,SD)
is the probability of being _______ __ and __ - Correct Ans-between;86;15
qnorm(0.99,mean,SD)
is the ___ ___________ - Correct Ans-99th;percentile
a number that tells how many standard deviations above or below the mean a score is -
Correct Ans-z-score
the special normal distribution that has a mean of 0 and a SD of 1 - Correct Ans-
standard normal distribution
a _______ varies from sample to sample - Correct Ans-statistic
the sample mean will have a normal distribution if the sample size is sufficiently large -
Correct Ans-Central Limit Theorem
pnorm(35,mean,SD)/SQRT(50)
is the probability that the average of _____ customers will be ____ than ____ - Correct
Ans-50;less;35
a _____ distribution uses S as the SD - Correct Ans-t
The two branches of the study of statistics are generally referred to as _____________
and _____________ - Correct Ans-descriptive;inferential
In inferential statistics, we calculate statistics of sample data to
a. estimate unknown population parameters.
b. conduct tests about unknown population parameters.
c. Both of these choices are correct.
d. Neither of these choices is correct. - Correct Ans-c
variables that are measured at regular intervals over time are called a ____ _____ -
Correct Ans-time series
when several variables are all measured at the same time point (or time frame) the data
is called _____ ______ data - Correct Ans-cross sectional
A(n) ____________ variable is characterized by infinitely uncountable values and can
take any value within interval. - Correct Ans-continuous
For which of the following data sets will a pie chart be most useful?
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