Assignment
QUESTION 1
The collection of all elements of interest in a particular study is
the population
the sampling
statistical inference
Data and Statistics
QUESTION 2
A portion of the population selected to represent the population is called
statistical inference
Data and Statistics
a census
a sample
QUESTION 3
The process of analyzing sample data in order to draw conclusions about the characteristics of a population is called
Data and Statistics
statistical inference
data analysis
data summarization
QUESTION 4
Categorical data
indicate either how much or how many
annot be numeric
are labels used to identify attributes of elements
must be nonnumeric
QUESTION 5
Quantitative data
are always nonnumeric
may be either numeric or nonnumeric
are always numeric
None of these alternatives is correct.
QUESTION 6
In a questionnaire, respondents are asked to mark their gender as male or female. Gender is an example of a
categorical variable
quantitative variable
categorical or quantitative variable, depending on how the respondents answered the question
None of these alternatives is correct.
QUESTION 7
The average age in a sample of 190 students at City College is 22. As a result of this sample, it can be concluded that the average age of all the students at City College
must be more than 22, since the population is always larger than the sample
must be less than 22, since the sample is only a part of the population
could not be 22
could be larger, smaller, or equal to 22
QUESTION 8
A statistics professor asked students in a class their ages. On the basis of this information, the professor states that the average age of all the students in the university is 24 years. This is an example of
a census
Data and Statistics
an experiment
statistical inference
QUESTION 9
A graphical presentation of the relationship between two variables is
an ogive
a histogram
either an ogive or a histogram, depending on the type of data
a scatter diagram
QUESTION 10
Thecan be used to show the rank order and shape of a data set simultaneously.
Ogive
pie chart
stem-and-leaf display
bar chart
QUESTION 11
Which of the following is a graphical summary of a set of data in which each data value is represented by a dot above the axis?
histogram
box plot
dot plot
crosstabulation
QUESTION 12
Categorical data can be graphically represented by using a(n)
histogram
frequency polygon
ogive
bar chart
QUESTION 13
A tabular summary of a set of data showing the fraction of the total number of items in several classes is a
frequency distribution
relative frequency distribution
frequency
cumulative frequency distribution
QUESTION 14
Fifteen percent of the students in a school of Business Administration are majoring in Economics, 20% in Finance, 35% in Management, and 30% in Accounting. The graphical device(s) which can be used to present these data is (are)
a line chart
only a bar chart
only a pie chart
both a bar chart and a pie chart
QUESTION 15
A line that provides an approximation of the relationship between two variables is known as the
relationship line
Trend line
line of 2 variables
approximation of two variables.