intro to stats wgu tests ACTUAL
QUESTIONS AND CORRECT ANSWERS
- Which variable is quantitative? - CORRECT ANSWERS A.
Interest rate in a study about investment decisions
A student is conducting research on the study habits of fellow students
at a college. Which variable of the study is quantitative? - CORRECT
ANSWERS C. Time spent studying
A student is conducting research on the study habits of fellow students
at a college.Which variable of the study is qualitative? - CORRECT
ANSWERS D. Major area of study
A researcher is studying employee satisfaction at a company.Which
variable is numerical? - CORRECT ANSWERS C. Annual
salary
Research is being conducted on a company's employees, specifically
related to satisfaction. Which variable of the study is quantitative? -
CORRECT ANSWERS A. Years of experience
A researcher is studying employee satisfaction at a company.Which
variable is categorical? - CORRECT ANSWERS A.
Department
,Which category of variable describes a college major in a study about
motivation in sports and competition? - CORRECT ANSWERS
A. Nominal
Which type of variable is a perceived level of satisfaction in a study
about customer service? - CORRECT ANSWERS B. Ordinal
Which phrase describes an interval variable? - CORRECT
ANSWERS A. Body temperature (in Celsius) in a study about
a nutritional supplement
What is an example of a discrete variable? - CORRECT ANSWERS
D. The number of students in a study about classroom size and
learning
A student collected categorical data for a research project and is
creating a bar chart. Which general guideline should the student
follow to avoid creating a misleading chart? - CORRECT ANSWERS
D. Use plain bars rather than images
A researcher recorded the heart rates of the participants in two
different groups. The researcher wants to create a display for each
distribution that will show whether the distribution is symmetric or
skewed and display the numerical values of the minimum, the
maximum, and the median.What is the appropriate graphical display?
- CORRECT ANSWERS A. Box plot
A researcher collected data on the annual incomes of 30,000 randomly
selected adults. The researcher wants to visually compare the income
, levels and has created a frequency table by splitting the income levels
into ranges of $10,000.What is the appropriate graphical display? -
CORRECT ANSWERS A. Histogram
A student has a list of the heights, in centimeters, of each of 26
football players. The student wants to quickly organize the data and
visualize the distribution while still being able to see each data
value.What is the appropriate graphical display? - CORRECT
ANSWERS C. Stem-and-leaf plot
A researcher created three frequency tables, one for the data from
each of three experimental groups. The data is quantitative. The
researcher wants to display the data together to compare the
distributions of the three groups.What is the appropriate graphical
display? - CORRECT ANSWERS C. Frequency polygon
A researcher collected data on class sizes and standardized test
performance. In a sample of 1,000 classes, the size of the class and
the mean performance on a standardized test were recorded. The
researcher wants a visual display to investigate if class size is related
to test performance.What is the appropriate graphical display? -
CORRECT ANSWERS B. Scatterplot
Which statement can be accurately made about distribution A?Image
description: The graph displays four overlapping normal curves
labeled A, B, C, and D. Curve A is centered around x = 2 and has a
moderate spread. Curve B is wider and shorter, centered around x = 3.
Curve C is the narrowest and tallest, peaking at x = 4. Curve D is
similar in shape to A and has its peak around x = 5. All curves are
plotted on the same set of axes with the x-axis ranging from 1 to 6. -
CORRECT ANSWERS B. It has the least mean.
QUESTIONS AND CORRECT ANSWERS
- Which variable is quantitative? - CORRECT ANSWERS A.
Interest rate in a study about investment decisions
A student is conducting research on the study habits of fellow students
at a college. Which variable of the study is quantitative? - CORRECT
ANSWERS C. Time spent studying
A student is conducting research on the study habits of fellow students
at a college.Which variable of the study is qualitative? - CORRECT
ANSWERS D. Major area of study
A researcher is studying employee satisfaction at a company.Which
variable is numerical? - CORRECT ANSWERS C. Annual
salary
Research is being conducted on a company's employees, specifically
related to satisfaction. Which variable of the study is quantitative? -
CORRECT ANSWERS A. Years of experience
A researcher is studying employee satisfaction at a company.Which
variable is categorical? - CORRECT ANSWERS A.
Department
,Which category of variable describes a college major in a study about
motivation in sports and competition? - CORRECT ANSWERS
A. Nominal
Which type of variable is a perceived level of satisfaction in a study
about customer service? - CORRECT ANSWERS B. Ordinal
Which phrase describes an interval variable? - CORRECT
ANSWERS A. Body temperature (in Celsius) in a study about
a nutritional supplement
What is an example of a discrete variable? - CORRECT ANSWERS
D. The number of students in a study about classroom size and
learning
A student collected categorical data for a research project and is
creating a bar chart. Which general guideline should the student
follow to avoid creating a misleading chart? - CORRECT ANSWERS
D. Use plain bars rather than images
A researcher recorded the heart rates of the participants in two
different groups. The researcher wants to create a display for each
distribution that will show whether the distribution is symmetric or
skewed and display the numerical values of the minimum, the
maximum, and the median.What is the appropriate graphical display?
- CORRECT ANSWERS A. Box plot
A researcher collected data on the annual incomes of 30,000 randomly
selected adults. The researcher wants to visually compare the income
, levels and has created a frequency table by splitting the income levels
into ranges of $10,000.What is the appropriate graphical display? -
CORRECT ANSWERS A. Histogram
A student has a list of the heights, in centimeters, of each of 26
football players. The student wants to quickly organize the data and
visualize the distribution while still being able to see each data
value.What is the appropriate graphical display? - CORRECT
ANSWERS C. Stem-and-leaf plot
A researcher created three frequency tables, one for the data from
each of three experimental groups. The data is quantitative. The
researcher wants to display the data together to compare the
distributions of the three groups.What is the appropriate graphical
display? - CORRECT ANSWERS C. Frequency polygon
A researcher collected data on class sizes and standardized test
performance. In a sample of 1,000 classes, the size of the class and
the mean performance on a standardized test were recorded. The
researcher wants a visual display to investigate if class size is related
to test performance.What is the appropriate graphical display? -
CORRECT ANSWERS B. Scatterplot
Which statement can be accurately made about distribution A?Image
description: The graph displays four overlapping normal curves
labeled A, B, C, and D. Curve A is centered around x = 2 and has a
moderate spread. Curve B is wider and shorter, centered around x = 3.
Curve C is the narrowest and tallest, peaking at x = 4. Curve D is
similar in shape to A and has its peak around x = 5. All curves are
plotted on the same set of axes with the x-axis ranging from 1 to 6. -
CORRECT ANSWERS B. It has the least mean.
