QNT/275
STATISTICS FOR DECISION MAKING
The Latest Version A+ Study Guide
QNT 275T Apply Week 1 Connect® Exercise Week 1 Exercise
QNT 275T Apply Week 1 Connect® Exercise Week 1 Exercise
Which of the following is not a method of predictive analytics?
factor detection
outlier detection
bullet graphs
association learning
___________ refers to describing the important aspects of a set of measurements.
Cross-sectional analysis
Runs plot
Descriptive statistics
Time series analysis
Any characteristic of an element is called a ____________.
set
process
variable
D)census
A(n) ____________ variable can have values that indicate into which of several categories of a population it belongs.
qualitative
quantitative
ratio
interval
A ____________ variable can have values that are numbers on the real number line.
qualitative
quantitative
categorical
nominative
Jersey numbers of soccer players is an example of a(n) ___________ variable.
nominative
ordinal
interval
ratio
Which of the following is a quantitative variable?
the manufacturer of a cell phone
a person’s gender
mileage of a car
whether a person is a college graduate
whether a person has a charge account
Which of the following is a type of question used in survey research?
dichotomous
free response
rating
All of the other answers are correct.
___________ sampling is where we know the chance that each element will be included in the sample, which allows us to make statistical inferences about the sample population.
Convenience
Voluntary
Probability
Judgment
Which of the following is not a supervised learning technique in predictive analytics?
linear regression
factor analysis
decision trees
neural networks
______________ is the science of using a sample to make generalizations about the important aspects of a population.
Time series analysis
Descriptive statistics
Random sample
Statistical inference
The two types of quantitative variables are
ordinal and ratio.
interval and ordinal.
nominative and ordinal.
interval and ratio.
nominative and interval.
A Yes or No question is _____________.
dichotomous
evaluative
open-ended
systematic
Temperature (in degrees Fahrenheit) is an example of a(n) __________ variable.
nominative
ordinal
interval
ratio
A data set provides information about some group of individual _____________.
variables
elements
statistics
measurements
Examining all population measurements is called a_____________.
census
frame
sample
variable
__________ consists of a set of concepts and techniques that are used to describe populations and samples.
Traditional statistics
Random sampling
Data mining
Time series analysis
A ____________ is a set of assumptions about how sample data are selected and about the population from which the sample data are selected.
random sampling
statistical model
descriptive statistics
probability sampling
_________ is a necessary component of a runs plot.
Observation over time
Qualitative variable
Random sampling of the data
Cross-sectional data
Non-overlapping groups in random sampling of a population are called
clusters.
frames.
strata.
stages.
Which of the following is a categorical variable?
air temperature
bank account balance
daily sales in a store
whether a person has a traffic violation
value of company stock
_________ uses traditional or newer graphics to present visual summaries of business information.
Predictive analytics
Data mining
Association learning
Descriptive analytics
An identification of police officers by rank would represent a(n) ____________ level of measurement.
nominative
ordinal
interval
ratio
A set of all elements we wish to study is called a ____________.
sample
process
census
population
A sequence of operations that takes inputs and turns them into outputs is a ____________.
process
statistical inference
runs plot
random sampling
A _____ is a list of all the units in a population.
sample
frame
census
variable
College entrance exam scores, such as SAT scores, are an example of a(n) _____________ variable.
ordinal
ratio
nominative
interval
QNT 275T Apply Week 1 Connect® Exercise Week 1 Exercise
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