WGU C955 OBJECTIVE ASSESSMENT APPLIED PROBABILITY
AND STATISTICS OA EXAM LATEST ACTUAL EXAM TEST BANK
MODULE 1-MODULE 7
distribution - ANSWER: an arrangement of values that demonstrates their frequency
or occurrence
pie chart - ANSWER: categorical data, %
bar chart - ANSWER: categorical data; displays counts or frequencies for a category
dot plot - ANSWER: quantitative data, data is represented by a single point
stem plots - ANSWER: quantitative data, shows distribution while representing
specific data points
box plots - ANSWER: quantitative data, can be used to compare data sets, each part
is 25% of data
histograms - ANSWER: quantitative data, display frequencies or counts
quantitative data - ANSWER: numerical data, consists of data values that are
numerical, representing quantities that can be counted or measured
categorical data - ANSWER: data that consists of names, labels, or other
nonnumerical values
relative frequency - ANSWER: a way to approximate a percentage by dividing the
number of times an event occurred by the number of trials
frequency distribution - ANSWER: a record of the number of times data occurs within
a certain category
outliers - ANSWER: an observation point (number) that is distant from the other
observations of a data set
center - ANSWER: a measure of central tendency that is used to describe an entire
set of data with one value that represents the middle or center of the distribution
(mean, median, mode)
interval - ANSWER: a set of numbers between two specified values
check sheet - ANSWER: a table that allows data to be collected by marking how often
an event has occurred in a certain interval
, symmetric distributions - ANSWER: the left half of a data set being roughly identical
to the right half
bell curve - ANSWER: normal distribution, results from graphing frequency versus
distribution for a trait that varies continuously in a population
skewed-right - ANSWER: type of data distribution where frequency starts small,
increases, then gradually decreases again
skewed-left - ANSWER: distribution where data starts small and consistently
increases before dropping off again
u-shaped - ANSWER: distribution where data in the middle is lower than the data on
the left or right
uniform - ANSWER: distribution where all data is virtually the same
bimodal - ANSWER: data set with only two peaks
multimodal - ANSWER: data set with multiple peaks
statistics - ANSWER: the collection and classification of data that are in the form of
numbers
reliable data - ANSWER: data that is consistent and repeatable
valid data - ANSWER: data resulting from a test that accurately measures what it was
intended to measure
five number summary - ANSWER: lists the minimum, first quartile, median, third
quartile, and maximum in a data set
quartiles - ANSWER: divides data into four equally sized groups
interquartile range - ANSWER: difference between the third quartile and the first
quartile
normal symmetric (measures of center and spread) - ANSWER: mean; standard
deviation
skewed (measures of center and spread) - ANSWER: median; range or interquartile
range
explanatory variable (independent variable) - ANSWER: the cause of some result
response variable (dependent variable) - ANSWER: the affected or changed variable
AND STATISTICS OA EXAM LATEST ACTUAL EXAM TEST BANK
MODULE 1-MODULE 7
distribution - ANSWER: an arrangement of values that demonstrates their frequency
or occurrence
pie chart - ANSWER: categorical data, %
bar chart - ANSWER: categorical data; displays counts or frequencies for a category
dot plot - ANSWER: quantitative data, data is represented by a single point
stem plots - ANSWER: quantitative data, shows distribution while representing
specific data points
box plots - ANSWER: quantitative data, can be used to compare data sets, each part
is 25% of data
histograms - ANSWER: quantitative data, display frequencies or counts
quantitative data - ANSWER: numerical data, consists of data values that are
numerical, representing quantities that can be counted or measured
categorical data - ANSWER: data that consists of names, labels, or other
nonnumerical values
relative frequency - ANSWER: a way to approximate a percentage by dividing the
number of times an event occurred by the number of trials
frequency distribution - ANSWER: a record of the number of times data occurs within
a certain category
outliers - ANSWER: an observation point (number) that is distant from the other
observations of a data set
center - ANSWER: a measure of central tendency that is used to describe an entire
set of data with one value that represents the middle or center of the distribution
(mean, median, mode)
interval - ANSWER: a set of numbers between two specified values
check sheet - ANSWER: a table that allows data to be collected by marking how often
an event has occurred in a certain interval
, symmetric distributions - ANSWER: the left half of a data set being roughly identical
to the right half
bell curve - ANSWER: normal distribution, results from graphing frequency versus
distribution for a trait that varies continuously in a population
skewed-right - ANSWER: type of data distribution where frequency starts small,
increases, then gradually decreases again
skewed-left - ANSWER: distribution where data starts small and consistently
increases before dropping off again
u-shaped - ANSWER: distribution where data in the middle is lower than the data on
the left or right
uniform - ANSWER: distribution where all data is virtually the same
bimodal - ANSWER: data set with only two peaks
multimodal - ANSWER: data set with multiple peaks
statistics - ANSWER: the collection and classification of data that are in the form of
numbers
reliable data - ANSWER: data that is consistent and repeatable
valid data - ANSWER: data resulting from a test that accurately measures what it was
intended to measure
five number summary - ANSWER: lists the minimum, first quartile, median, third
quartile, and maximum in a data set
quartiles - ANSWER: divides data into four equally sized groups
interquartile range - ANSWER: difference between the third quartile and the first
quartile
normal symmetric (measures of center and spread) - ANSWER: mean; standard
deviation
skewed (measures of center and spread) - ANSWER: median; range or interquartile
range
explanatory variable (independent variable) - ANSWER: the cause of some result
response variable (dependent variable) - ANSWER: the affected or changed variable
