Question 1

The sum of all the relative frequencies of classes up to and including a particular class is defined as the:

Accepted Answer

A)  relative frequency (RF). 
B)  boundary frequency (BF). 
C)  cumulative relative frequency (CRF). 
D)  frequency modulation (FM). 
A)  relative frequency (RF). 
B)  boundary frequency (BF). 
C)  cumulative relative frequency (CRF). 
D)  frequency modulation (FM).

Question 2

Concerning univariate data, a ______________ or ________________ data set consists of observations that are numbers.

Accepted Answer

A)  categorical; qualitative 
B)  categorical; quantitative 
C)  numerical; quantitative 
D)  numerical; qualitative 
A)  categorical; qualitative 
B)  categorical; quantitative 
C)  numerical; quantitative 
D)  numerical; qualitative

Question 3

To assure prompt service, the city metro routinely records wait times at its various bus stops.The length of time a customer must wait for a bus is recorded to the nearest second.What type of data are these?

Accepted Answer

A)  Qualitative 
B)  Discrete 
C)  Continuous 
D)  Multivariate 
A)  Qualitative 
B)  Discrete 
C)  Continuous 
D)  Multivariate

Question 4

A distribution with only one peak is called:

Accepted Answer

A)  single peaking. 
B)  multimodal. 
C)  bimodal. 
D)  unimodal. 
A)  single peaking. 
B)  multimodal. 
C)  bimodal. 
D)  unimodal.

Question 5

A survey records a person's smoking status as either "yes" or "no." This survey is recording what kind of data?

Accepted Answer

A)  Categorical/qualitative 
B)  Categorical/quantitative 
C)  Numerical/quantitative 
D)  Numerical/qualitative 
A)  Categorical/qualitative 
B)  Categorical/quantitative 
C)  Numerical/quantitative 
D)  Numerical/qualitative

Question 6

A student wants to use a curve to represent the number of students in each class over the school day.The student's friend says a bar chart should be used.Who is correct, and why?

Accepted Answer

A)  The student; the curve is a more accurate representation. 
B)  The friend; the data on class sizes are discrete but a curve implies the data are continuous. 
C)  Both; either form of the graph gives the same information. 
D)  Neither; the graph should present the cumulative frequency. 
A)  The student; the curve is a more accurate representation. 
B)  The friend; the data on class sizes are discrete but a curve implies the data are continuous. 
C)  Both; either form of the graph gives the same information. 
D)  Neither; the graph should present the cumulative frequency.

Question 7

Concerning univariate data, a _____________ or ______________ data set consists of non-numerical observations that may be placed in categories.

Accepted Answer

A)  categorical; qualitative 
B)  categorical; quantitative 
C)  numerical; quantitative 
D)  numerical; qualitative 
A)  categorical; qualitative 
B)  categorical; quantitative 
C)  numerical; quantitative 
D)  numerical; qualitative

Question 8

A survey records the number of U.S.states each person has visited.This is an example of what type of data?

Accepted Answer

A)  Categorical 
B)  Continuous 
C)  Discrete 
D)  Qualitative 
A)  Categorical 
B)  Continuous 
C)  Discrete 
D)  Qualitative

The sum of all the relative frequencies of classes up to and including a particular class is defined as the:

Concerning univariate data, a or __ data set consists of observations that are numbers.

To assure prompt service, the city metro routinely records wait times at its various bus stops.The length of time a customer must wait for a bus is recorded to the nearest second.What type of data are these?

A distribution with only one peak is called:

A survey records a person's smoking status as either "yes" or "no." This survey is recording what kind of data?

A student wants to use a curve to represent the number of students in each class over the school day.The student's friend says a bar chart should be used.Who is correct, and why?

Concerning univariate data, a _ or __ data set consists of non-numerical observations that may be placed in categories.

A survey records the number of U.S.states each person has visited.This is an example of what type of data?

Why Study Statistics

An Introduction to Statistics and Statistical Inference

Numerical Summary Measures

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Confidence Intervals Based on a Single Sample

Hypothesis Tests Based on a Single Sample

Confidence Intervals and Hypothesis Tests Based on Two Samples or Treatments

The Analysis of Variance

Correlation and Linear Regression

Categorical Data and Frequency Tables

Nonparametric Statistics

Filters

Exam 3: Tables and Graphs for Summarizing Data

The sum of all the relative frequencies of classes up to and including a particular class is defined as the:

Concerning univariate data, a ______________ or ________________ data set consists of observations that are numbers.

To assure prompt service, the city metro routinely records wait times at its various bus stops.The length of time a customer must wait for a bus is recorded to the nearest second.What type of data are these?

A distribution with only one peak is called:

A survey records a person's smoking status as either "yes" or "no." This survey is recording what kind of data?

A student wants to use a curve to represent the number of students in each class over the school day.The student's friend says a bar chart should be used.Who is correct, and why?

Concerning univariate data, a _____________ or ______________ data set consists of non-numerical observations that may be placed in categories.

A survey records the number of U.S.states each person has visited.This is an example of what type of data?

Why Study Statistics

An Introduction to Statistics and Statistical Inference

Numerical Summary Measures

Probability

Random Variables and Discrete Probability Distributions

Continuous Probability Distributions

Sampling Distributions

Confidence Intervals Based on a Single Sample

Hypothesis Tests Based on a Single Sample

Confidence Intervals and Hypothesis Tests Based on Two Samples or Treatments

The Analysis of Variance

Correlation and Linear Regression

Categorical Data and Frequency Tables

Nonparametric Statistics

Filters

Concerning univariate data, a or __ data set consists of observations that are numbers.

Concerning univariate data, a _ or __ data set consists of non-numerical observations that may be placed in categories.