Question 1

A variable is a characteristic of a

Accepted Answer

A) case. 
B) label. 
C) value. 
D) None of the above 
A) case. 
B) label. 
C) value. 
D) None of the above

Question 2

The World Malaria Report (2008)has information on the number of reported malaria cases from 2005 and 2006 for the 10 countries listed in West Africa.The data are presented in the table below.   If the number of malaria cases for Sierra Leone were removed from this data set,what would happen to the mean of the entire data set for the year 2006?

Accepted Answer

A) The mean would not change. 
B) The mean would change. 
C) You cannot tell without doing the calculation. 
A) The mean would not change. 
B) The mean would change. 
C) You cannot tell without doing the calculation.

Question 3

In a statistics class with 136 students,the professor records how much money each student has in their possession during the first class of the semester.The histogram shown below represents the data he collected.   From the histogram,which of the following is TRUE?

Accepted Answer

A) The mean is larger than the median. 
B) The mean is smaller than the median. 
C) The mean and median are approximately equal. 
D) It is impossible to compare the mean and median for these data. 
A) The mean is larger than the median. 
B) The mean is smaller than the median. 
C) The mean and median are approximately equal. 
D) It is impossible to compare the mean and median for these data.

Question 4

Categorical variables are best displayed by ______.

Accepted Answer

A) histograms 
B) pie charts 
C) bar graphs 
D) pie charts or bar graphs 
A) histograms 
B) pie charts 
C) bar graphs 
D) pie charts or bar graphs

Question 5

The bar graph below represents the highest education level achieved for 30 random females and 60 random males questioned on a street in downtown Washington,DC.   How many males completed at least some graduate school?

Accepted Answer

A) 5 
B) 2 
C) 3 
D) 60 
A) 5 
B) 2 
C) 3 
D) 60

Question 6

Consider the following data which describe the amount of time in minutes students spend studying for a quiz: 10,11,11,12,12,14,15,18,19,20,22,24,39,40,41,44,46,50,52,52,53,55,70.
What numbers make up the leaf of the first stem?

Accepted Answer

A) 0,1,1,2,2,4,5,8,9 
B) 0,1,2,4,5,8,9 
C) 0,1,1,2,2,4,5,8,9,0,2,4,9,0,1,4,6,0,2,2,3,5,0 
D) None of the above 
A) 0,1,1,2,2,4,5,8,9 
B) 0,1,2,4,5,8,9 
C) 0,1,1,2,2,4,5,8,9,0,2,4,9,0,1,4,6,0,2,2,3,5,0 
D) None of the above

Question 7

The histogram below represents the height (in inches)of the gold medal-winning high jumps for the Olympic Games up to Sydney 2000.   What is approximately the percentage of these winning jumps that were at least 7 feet and1 inch high (85 inches)?

Accepted Answer

A) 9% 
B) 14% 
C) 23% 
D) 35% 
A) 9% 
B) 14% 
C) 23% 
D) 35%

Question 8

Malaria is a leading cause of infectious disease and death worldwide.The table below represents the mean number of reported malaria cases (between 1996 and 2006)for each of 10 West African countries,as published in the journal Statistica Neerlandica in 2010.   True or False.Making a histogram of the data would tell us if the distribution of the malaria data is symmetric.

Accepted Answer

A) True 
 B)False

Question 9

The following stemplot displays the number of forest fires (in thousands)that occurred each year over the period from 1970 to 2000 in Canada,where 5|2 represents 5200 fires.   From the stemplot we can see that

Accepted Answer

A) the shape of the distribution is skewed to the left. 
B) there appears to be one large peak. 
C) there was a total of 9 years in which more than 10,000 fires occurred. 
D) only one year had fewer than 6000 fires. 
E) All of the above 
A) the shape of the distribution is skewed to the left. 
B) there appears to be one large peak. 
C) there was a total of 9 years in which more than 10,000 fires occurred. 
D) only one year had fewer than 6000 fires. 
E) All of the above

Question 10

Below is a data set with information on students in a basic statistics class at a local university.Are there any striking deviations from the overall pattern for the quantitative variable in the data set?

Accepted Answer

A) No,the data follow the same pattern. 
B) Yes,there is an outlier. 
C) Too few data points to determine 
D) None of the above. 
A) No,the data follow the same pattern. 
B) Yes,there is an outlier. 
C) Too few data points to determine 
D) None of the above.

Question 11

Large data sets with quantitative variables are best displayed using ________.

Accepted Answer

A) stemplots 
B) histograms 
C) stemplots and histograms 
D) none of the above 
A) stemplots 
B) histograms 
C) stemplots and histograms 
D) none of the above

Question 12

The first day of class the professor collects information on each student to make a data set that will be analyzed throughout the semester.The information asked includes hometown,GPA,number of classes,number of siblings,and favorite subject.How many variables are in this data set?

Accepted Answer

A) 1 
B) 2 
C) 5 
D) None of the above 
A) 1 
B) 2 
C) 5 
D) None of the above

Question 13

Data are collected from 1100 randomly selected students who graduated between 2005 and 2008 from the University of Florida.A pie chart of the departments in the school/college from which the 1100 sampled students graduated is shown below.   Based on the graph, (approximately)how many of the sampled students graduated with a degree in Building/Construction or Architecture?

Accepted Answer

A) 55 
B) 59 
C) 65 
D) 99 
A) 55 
B) 59 
C) 65 
D) 99

Question 14

According to the Bureau of Labor and Statistics in 2014,the average salary of all female workers is $37,596.The average salary of all male workers is $45,500.What must be true about the average salary of all workers?

Accepted Answer

A) It must be $38,000. 
B) It must be larger than the median salary. 
C) It could be any number between $37,596 and $45,500. 
D) None of the above. 
A) It must be $38,000. 
B) It must be larger than the median salary. 
C) It could be any number between $37,596 and $45,500. 
D) None of the above.

Question 15

The tails of a distribution show the _______.

Accepted Answer

A) center 
B) extreme values 
C) median 
D) None of the above 
A) center 
B) extreme values 
C) median 
D) None of the above

Question 16

The World Malaria Report (2008)has information on the number of reported malaria cases from 2005 and 2006 for the 10 countries listed in West Africa.The data are presented in the table below.   If the number of malaria cases for Ghana were removed from this data set,what would happen to the mean of the entire data set for the year 2005?

Accepted Answer

A) The mean would not change. 
B) The mean would change. 
C) You cannot tell without doing the calculation. 
A) The mean would not change. 
B) The mean would change. 
C) You cannot tell without doing the calculation.

Question 17

Quantitative variables are best displayed using _______.

Accepted Answer

A) stemplots 
B) pie charts 
C) bar graphs 
D) pie charts or bar graphs 
A) stemplots 
B) pie charts 
C) bar graphs 
D) pie charts or bar graphs

Question 18

Below is a data set with information on students in a basic statistics class at a local university.Which variable is the label?

Accepted Answer

A) Student ID 
B) GPA 
C) Hometown 
D) Major 
A) Student ID 
B) GPA 
C) Hometown 
D) Major

Question 19

The following boxplot is of the birth weights (in ounces)of 160 infants born in a local hospital.   The median birth weight is approximately ________________.

Accepted Answer

A) 90 ounces 
B) 100 ounces 
C) 110 ounces 
D) 120 ounces 
A) 90 ounces 
B) 100 ounces 
C) 110 ounces 
D) 120 ounces

Question 20

In a statistics class with 136 students,the professor records how much money each student has in their possession during the first class of the semester.The histogram shown below represents the data he collected.   What is approximately the percentage of students with under $10 in their possession?

Accepted Answer

A) 35% 
B) 40% 
C) 44% 
D) 50% 
A) 35% 
B) 40% 
C) 44% 
D) 50%

A variable is a characteristic of a

In a statistics class with 136 students,the professor records how much money each student has in their possession during the first class of the semester.The histogram shown below represents the data he collected. From the histogram,which of the following is TRUE?

Categorical variables are best displayed by ______.

The bar graph below represents the highest education level achieved for 30 random females and 60 random males questioned on a street in downtown Washington,DC. How many males completed at least some graduate school?

Consider the following data which describe the amount of time in minutes students spend studying for a quiz: 10,11,11,12,12,14,15,18,19,20,22,24,39,40,41,44,46,50,52,52,53,55,70. What numbers make up the leaf of the first stem?

The histogram below represents the height (in inches)of the gold medal-winning high jumps for the Olympic Games up to Sydney 2000. What is approximately the percentage of these winning jumps that were at least 7 feet and1 inch high (85 inches)?

The following stemplot displays the number of forest fires (in thousands)that occurred each year over the period from 1970 to 2000 in Canada,where 5|2 represents 5200 fires. From the stemplot we can see that

Below is a data set with information on students in a basic statistics class at a local university.Are there any striking deviations from the overall pattern for the quantitative variable in the data set?

Large data sets with quantitative variables are best displayed using ________.

The first day of class the professor collects information on each student to make a data set that will be analyzed throughout the semester.The information asked includes hometown,GPA,number of classes,number of siblings,and favorite subject.How many variables are in this data set?

According to the Bureau of Labor and Statistics in 2014,the average salary of all female workers is $37,596.The average salary of all male workers is $45,500.What must be true about the average salary of all workers?

The tails of a distribution show the _______.

Quantitative variables are best displayed using _______.

Below is a data set with information on students in a basic statistics class at a local university.Which variable is the label?

The following boxplot is of the birth weights (in ounces)of 160 infants born in a local hospital. The median birth weight is approximately ________________.

In a statistics class with 136 students,the professor records how much money each student has in their possession during the first class of the semester.The histogram shown below represents the data he collected. What is approximately the percentage of students with under $10 in their possession?

Looking at Datarelationships

Producing Data

Probability: the Study of Randomness

Sampling Distributions

Introduction to Inference

Inference for Means

Inference for Proportions

Inference for Categorical Data

Inference for Regression

Multiple Regression

One-Way Analysis of Variance

Two-Way Analysis of Variance

Logistic Regression

Nonparametric Tests

Bootstrap Methods and Permutation Tests

Statistics for Quality: Control and Capability

Filters

Exam 1: Looking at Datadistributions

A variable is a characteristic of a

In a statistics class with 136 students,the professor records how much money each student has in their possession during the first class of the semester.The histogram shown below represents the data he collected. From the histogram,which of the following is TRUE?

Categorical variables are best displayed by ______.

The bar graph below represents the highest education level achieved for 30 random females and 60 random males questioned on a street in downtown Washington,DC. How many males completed at least some graduate school?

Consider the following data which describe the amount of time in minutes students spend studying for a quiz: 10,11,11,12,12,14,15,18,19,20,22,24,39,40,41,44,46,50,52,52,53,55,70. What numbers make up the leaf of the first stem?

The histogram below represents the height (in inches)of the gold medal-winning high jumps for the Olympic Games up to Sydney 2000. What is approximately the percentage of these winning jumps that were at least 7 feet and1 inch high (85 inches)?

The following stemplot displays the number of forest fires (in thousands)that occurred each year over the period from 1970 to 2000 in Canada,where 5|2 represents 5200 fires. From the stemplot we can see that

Below is a data set with information on students in a basic statistics class at a local university.Are there any striking deviations from the overall pattern for the quantitative variable in the data set?

Large data sets with quantitative variables are best displayed using ________.

The first day of class the professor collects information on each student to make a data set that will be analyzed throughout the semester.The information asked includes hometown,GPA,number of classes,number of siblings,and favorite subject.How many variables are in this data set?

According to the Bureau of Labor and Statistics in 2014,the average salary of all female workers is $37,596.The average salary of all male workers is $45,500.What must be true about the average salary of all workers?

The tails of a distribution show the _______.

Quantitative variables are best displayed using _______.

Below is a data set with information on students in a basic statistics class at a local university.Which variable is the label?

The following boxplot is of the birth weights (in ounces)of 160 infants born in a local hospital. The median birth weight is approximately ________________.

In a statistics class with 136 students,the professor records how much money each student has in their possession during the first class of the semester.The histogram shown below represents the data he collected. What is approximately the percentage of students with under $10 in their possession?

Looking at Datarelationships

Producing Data

Probability: the Study of Randomness

Sampling Distributions

Introduction to Inference

Inference for Means

Inference for Proportions

Inference for Categorical Data

Inference for Regression

Multiple Regression

One-Way Analysis of Variance

Two-Way Analysis of Variance

Logistic Regression

Nonparametric Tests

Bootstrap Methods and Permutation Tests

Statistics for Quality: Control and Capability

Filters