121) The managers at Harris Pizza in Boston have tracked the
tips received by their drivers along with the total bill to the customer. An
appropriate graph for analyzing the relationship between these two variables
is:
A) a scatter diagram.
B) a line chart.
C) a histogram.
D) a pie chart.
122) A scatter diagram can be used to do
which of the following?
A) Determine the trend in a variable
B) Analyze the relationship between two
variables
C) Describe the basic distribution for a
quantitative variable
D) Show the percentage of a variable that
is associated with each category into which that variable has been divided
123) In constructing a scatter diagram:
A) the independent variable should be on
the vertical axis.
B) the independent variable should be on
the horizontal axis.
C) the dependent variable should be on the
horizontal axis.
D) It does not matter which variable goes
on which axis.
124) Which of the following questions
CANNOT be answered using a scatter diagram?
A) What is the trend over time of each of
the 2 variables?
B) Is there a curved or linear relation
between the 2 variables?
C) Is there a weak or strong relation
between the 2 variables?
D) Is there a positive or negative
relation between the 2 variables?
125) The sales manager at Western
Furniture Company tracked data on the number of customers who came into the
store each day and the total dollar volume of sales at the store during the
same day. She is considering putting together a report for top management and
wishes to show the relationship between these two variables. Which of the
following graphs would likely be most useful? She has a sample of 36 days worth
of data.
A) Scatter diagram
B) Bar chart
C) Frequency histogram
D) Pie chart
126) Consider the following chart. Which
of the following statements is most correct?
.jpg”>
A) There is a negative linear relationship
between the two variables.
B) There is a positive linear relationship
between the two variables.
C) There is a perfect linear relationship
between the two variables.
D) There is no apparent relationship
between the two variables.
127) Consider the following chart. Which
of the following statements is most correct?
.jpg”>
A) The values for the dependent variable
are determined by the values for the independent variable.
B) The values in a scatter plot should be
connected by a straight line.
C) The variable on the horizontal axis
should be the independent variable.
D) A scatter plot like this one shows the
trend in the data over time.
128) The Fitness Center manager has
collected data on the number of visits to the club each week for the past 8
weeks. These data are shown as follows. Which of the following statements is
most correct?
Week 1
Week 2
Week 3
Week 4
Week 5
Week 6
Week 7
Week 8
1415
1623
1934
1879
2102
2156
2511
2499
A) The proper graph for displaying these
data is a pie chart.
B) There has been a gradual downward trend
in these data.
C) A frequency histogram should be
developed to help identify the trend in these data.
D) The data lend themselves to a line
chart.
129) The Fitness Center manager has
collected data on the number of visits to the club each week for the past 8
weeks. These data are shown as follows. Which of the following statements is
most correct?
Week 1
Week 2
Week 3
Week 4
Week 5
Week 6
Week 7
Week 8
1415
1623
1934
1879
2102
2156
2511
2499
A) A histogram will illustrate whether a
linear relationship exists between the number of visits and the week number.
B) A scatter diagram would be useful for
displaying these data.
C) A line chart for these data will show
that an upward trend in the number of visits to the club has occurred over two
weeks.
D) None of the above
130) Assuming you have data for a variable
with 2,000 values, using the 2k ? n
guideline, what is the least number of groups that should be used in developing
a grouped data frequency distribution?
A) 9
B) 11
C) 13
D) 12
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