1152stq1

QUESTION 1

1. The collection of all elements of interest in a particular study is

		the population
		the sampling
		statistical inference
		Data and Statistics

5 points   

QUESTION 2

1. A portion of the population selected to represent the population is called

		statistical inference
		Data and Statistics
		a census
		a sample

5 points   

QUESTION 3

1. 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

5 points   

QUESTION 4

1. Categorical data

		indicate either how much or how many
		annot be numeric
		are labels used to identify attributes of elements
		must be nonnumeric

5 points   

QUESTION 5

1. Quantitative data

		are always nonnumeric
		may be either numeric or nonnumeric
		are always numeric
		None of these alternatives is correct.

5 points   

QUESTION 6

1. 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.

5 points   

QUESTION 7

1. 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

5 points   

QUESTION 8

1. 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

5 points   

QUESTION 9

1. 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

5 points   

QUESTION 10

1. The can be used to show the rank order and shape of a data set simultaneously.

		Ogive
		pie chart
		stem-and-leaf display
		bar chart

5 points   

QUESTION 11

1. 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

10 points   

QUESTION 12

1. Categorical data can be graphically represented by using a(n)

		histogram
		frequency polygon
		ogive
		bar chart

10 points   

QUESTION 13

1. 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

10 points   

QUESTION 14

1. 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

10 points   

QUESTION 15

1. 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