SCMA 3040 TEST WITH
COMPLETE SOLUTION
Tabulation is a systematic arrangement of statistical data in columns or rows
in order to describe the issue under study - ANSWER true
An ogive shows values plotted agaisnt the mid-point of each class interval -
ANSWER false
6) _____ is a table that examines how one variable influences another variable.
A) a simple table
C) a grouped frequency table
D) a contigency table
E) none of the options - ANSWER D) a contigency table
8) A cumulative relative frequency distribution shows _____
A) the proportion of data items with values less than the upper limit of each
class
B) the proportion of data items with values less than the lower limit of each
class
C) the proportion of data items with values more than the lower limit of each
class
D) the proportion of data items with values more than the upper limit of each
class - ANSWER A) the proportion of data items with values less than the
,upper limit of each class
16) which of the following graph types can be used for categorical data?
A) pie chart
C) histogram
D) line chart
E) time series - ANSWER A) pie chart
9) an employment agency wishes to place 125 employees into desirable
statistical groups based on the time they spent commuting to work. The
shortest time is 5 minutes and the longest commuting time is 120 minutes.
The first group will have commuting time of _____
A) none of the options
B) 0-15 minutes
D) 5-15 minutes
E) 5-20 minutes - ANSWER D) 5-15 minutes
17) which of the following graphs can best be used to display a relationship
between 2 categorical variables?A) pie chart
B) stacked bar graph
D) scatterplot
E) histogram - ANSWER B) stacked bar graph
10) a grouped frequency table that shows age distribution has the following
class interval: 11-20; 21-30; 41-50; 51-60; and 61-over. The problem with this
, classification is that
A) the classes are not mutually exclusive
B) the classes are not equal in width
C) the classes are not continuous
D) the classes are not exhaustive - ANSWER C) the classes are not continuous
18) 15% of the students in the class are majoring in Justice studies, 20% in
early childhood studies, 35% in family and social work, and 30% in
psychology. The appropriate graphical device which can be used to present
these data is _____
A) a pie chart
B) a line chart
C) a time series
D) a scatter diagram - ANSWER A) a pie chart
A line chart shows values plotted against the upper limit of each class
interval. - ANSWER false
A bivariate data can visually be graphed using stacked and clustered bar
graphs. - ANSWER true
The mean measures the expected value of a data set - ANSWER true
the mode refers the middle value in a ranked dataset - ANSWER false
three-quarters of the values are less than the median - ANSWER false
75% of the values are less than the third quarter - ANSWER true
COMPLETE SOLUTION
Tabulation is a systematic arrangement of statistical data in columns or rows
in order to describe the issue under study - ANSWER true
An ogive shows values plotted agaisnt the mid-point of each class interval -
ANSWER false
6) _____ is a table that examines how one variable influences another variable.
A) a simple table
C) a grouped frequency table
D) a contigency table
E) none of the options - ANSWER D) a contigency table
8) A cumulative relative frequency distribution shows _____
A) the proportion of data items with values less than the upper limit of each
class
B) the proportion of data items with values less than the lower limit of each
class
C) the proportion of data items with values more than the lower limit of each
class
D) the proportion of data items with values more than the upper limit of each
class - ANSWER A) the proportion of data items with values less than the
,upper limit of each class
16) which of the following graph types can be used for categorical data?
A) pie chart
C) histogram
D) line chart
E) time series - ANSWER A) pie chart
9) an employment agency wishes to place 125 employees into desirable
statistical groups based on the time they spent commuting to work. The
shortest time is 5 minutes and the longest commuting time is 120 minutes.
The first group will have commuting time of _____
A) none of the options
B) 0-15 minutes
D) 5-15 minutes
E) 5-20 minutes - ANSWER D) 5-15 minutes
17) which of the following graphs can best be used to display a relationship
between 2 categorical variables?A) pie chart
B) stacked bar graph
D) scatterplot
E) histogram - ANSWER B) stacked bar graph
10) a grouped frequency table that shows age distribution has the following
class interval: 11-20; 21-30; 41-50; 51-60; and 61-over. The problem with this
, classification is that
A) the classes are not mutually exclusive
B) the classes are not equal in width
C) the classes are not continuous
D) the classes are not exhaustive - ANSWER C) the classes are not continuous
18) 15% of the students in the class are majoring in Justice studies, 20% in
early childhood studies, 35% in family and social work, and 30% in
psychology. The appropriate graphical device which can be used to present
these data is _____
A) a pie chart
B) a line chart
C) a time series
D) a scatter diagram - ANSWER A) a pie chart
A line chart shows values plotted against the upper limit of each class
interval. - ANSWER false
A bivariate data can visually be graphed using stacked and clustered bar
graphs. - ANSWER true
The mean measures the expected value of a data set - ANSWER true
the mode refers the middle value in a ranked dataset - ANSWER false
three-quarters of the values are less than the median - ANSWER false
75% of the values are less than the third quarter - ANSWER true
