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Pergunta 1
0 em 1 pontos
	
	
	
	Skills: Identify subjects and variables
Generate numerical measures of center of spread of the distribution of a quantitative variable and use them to summarize the distribution.
"multiple choice" question: select the correct answer. Based on the collected data 16% of self-employed individuals work less than how many hours per week?
	
	
	
	
		Resposta Selecionada:
	 
55
	Resposta Correta:
	 
39
	
	
	
Pergunta 4
0 em 1 pontos
	
	
	
	Skills: Identify subjects and variablesGenerate numerical measures of center of spread of the distribution of a quantitative variable and use them to summarize the distribution.
"multiple choice" question: select the correct answer.
Based on the collected data, approximately what percent of self-employed individuals work between 47 and 63 hours per week?
	
	
	
	
		Resposta Selecionada:
	 
50%
	Resposta Correta:
	 
47.5%
	
	
	
Pergunta 6
1 em 1 pontos
	
	
	
	Skills: Compare distributions
Identify subjects and variablesInterpret boxplots
"multiple choice" question: select the correct answer. Who has the higher scores on SSHA, in general?
	
	
	
	
		Resposta Selecionada:
	 
Females
	Resposta Correta:
	 
Females
	Feedback da resposta:
	Correct! The box for the females ends up being higher than the males box. Good work!
	
	
	
Pergunta 8
0 em 1 pontos
	
	
	Which of the following best describes the shape of the distribution?
		Resposta Selecionada:
	 
Symmetric with no outliers
	Resposta Correta:
	 
Skewed right with one possible outlier
Pergunta 2
0 em 1 pontos
	
	
	
	Skills: Identify subjects and variablesGenerate numerical measures of center of spread of the distribution of a quantitative variable and use them to summarize the distribution.
"multiple choice" question: select the correct answer. Here again, is the distribution of number hours of exercise per week for 50 male college student:
What do you expect the relationship between the mean and the median of this distribution to be?
	
	
	
	
		Resposta Selecionada:
	 
The mean will be smaller than the median
	Resposta Correta:
	 
The mean will be larger than the median
	
	
	
Pergunta 3
0 em 1 pontos
	
	
	
	Skills: Identify subjects and variablesCategorical vs. quantitative.
"multiple choice" question: select the correct answer. Remember that a categorical variable is one that can be categorized, or put into types.
A quantitative variable is one that can be measured. Of the following variables, which ones are categorical? 
	
	
	
	
		Resposta Selecionada:
	 
Gender, Blood Pressure, Age, Types of Bears, Sunburn Types 
	Resposta Correta:
	 
Gender, Types of Bears, Locations, Sunburn Types
	
	
	
Pergunta 5
1 em 1 pontos
	
	
	
	Skills: Generate graphical displays of the distribution of a quantitative variable and use them to summarize the overall pattern of the distribution.Identify subjects and variables
"multiple choice" question: select the correct answer. Here again, is the side-by-side boxplots that display the delivery time distributions (in minutes) of two pizza shops – “Big Slice” and “City Pizza” 
Within which delivery time interval would you expect to find the largest number of City Pizza deliveries?
	
	
	
	
		Resposta Selecionada:
	 
Between 25 and 30 minutes
	Resposta Correta:
	 
Between 25 and 30 minutes
	Feedback da resposta:
	This is correct.
	
	
	
Pergunta 9
0 em 1 pontos
	
	
	
	Skills: Generate graphical displays of the distribution of a quantitative variable and use them to summarize the overall pattern of the distribution.
Identify subjects and variables"multiple choice" question: select the correct answer. 
The side-by-side boxplots below display the delivery time distributions (in minutes) of two pizza shops – “Big Slice” and “City Pizza”
75% of Big Slice deliveries take: 
	
	
	
	
		Resposta Selecionada:
	 
Less then 30 minutes
	Resposta Correta:
	 
More than 25 minutes
	
	
	
Pergunta 10
1 em 1 pontos
	
	
	
	Skills: Calculate appropriate conditional percentages.
Identify subjects and variables.
"multiple choice" question: select the correct answer. In the below two-way table, convert the counts to percentages within (or restricted to) each category of the explanatory variable separately for About Right.
	
	
	
	
		Resposta Selecionada:
	 
Female= 73.7%, Male= 67.0%
	Resposta Correta:
	 
Female= 73.7%, Male= 67.0%
	Feedback da resposta:
	Correct! Your calculations were spot on! Great job!
	
	
	
ta 1
1 em 1 pontos
	
	
	
	Skills: Generate graphical displays of the distribution of a quantitative variable and use them to summarize the overall pattern of the distribution. Identify subjects and variables
"multiple choice" question: select the correct answer. 
Here again, is the side-by-side boxplots that display the delivery time distributions (in minutes) of two pizza shops – “Big Slice” and “City Pizza”
Which pizza shop has more variability in delivery times?
	
	
	
	
		Resposta Selecionada:
	 
 Big Slice
	Resposta Correta:
	 
 Big Slice
	Feedback da resposta:
	This is correct.
	
	
	
Pergunta 2
0 em 1 pontos
	
	
	
	Questions 1-3 are related to the following information:
A college professor records the following information for each of the 55 students enrolled in her class:
• Gender
• Year (Freshman, Sophomore, Junior, Senior)
• Number of missed classes
• Midterm score
• Extra credit (1 – Submitted, 2 – Not submitted)
• Final exam score
Skills: Understand the structure of a data set and identify different type of variables.Identify subjects and variables
"multiple choice" question: select the correct answer. How many variables are there in this dataset?
	
	
	
	
		Resposta Selecionada:
	 
55
	Resposta Correta:
	 
6
	
	
	
Pergunta 3
1 em 1 pontos
	
	
	
	Skills: Compare distributions
Identify subjects and variables
Interpret boxplots
"multiple choice" question: select the correct answer. 
Which gender has a larger range of SSHA scores? 
	
	
	
	
		Resposta Selecionada:
	 
Males
	Resposta Correta:
	 
Males
	Feedback da resposta:
	Correct! Since the boxplot for the males is taller from top to bottom as compared to the females, it has a larger range. Great job! Way to go!
	
	
	
Pergunta 4
1 em 1 pontos
	
	
	
	Skills: Compare distributions
Identify subjects and variables
Interpret boxplots "multiple choice" question: select the correct answer. 
What is the approximate median SSHA score for each gender? 
	
	
	
	
		Resposta Selecionada:
	 
Females = 153, Males =114 
	Resposta Correta:
	 
Females = 153, Males =114 
	Feedback da resposta:
	Correct! You would use the horizontal line in each box to estimate the median. Good job!
	
	
	
Pergunta 5
0 em 1 pontos
	
	
	
	Skills: Summarize the distribution of a categorical variable.Identify subjects and variables
"multiple choice" question: select the correct answer. Consider the following graph that shows the how recycling has changed in the U.S. from 1990 to 2015:
Which of the following is true regarding this graph?
	
	
	
	
		Resposta Selecionada:
	 
This graph is misleading because it uses images rather than bars.
	Resposta Correta:
	 
This graph is misleading because it violates the principle that the area representing each year is not proportional to the number associated with that year.
	
	
	
Pergunta 6
1 em 1 pontos
	
	
	
	Skills: Generate graphical displays of the distribution of a quantitative variable and use them to summarize the overall pattern of the distribution. Identify subjects and variables
"multiple choice" question: select the correct answer. 
Hereagain, is the side-by-side boxplots that display the delivery time distributions (in minutes) of two pizza shops – “Big Slice” and “City Pizza”
Which pizza shop has a larger percentage of deliveries that take between 25 and 35 minutes?
	
	
	
	
		Resposta Selecionada:
	 
City Pizza
	Resposta Correta:
	 
City Pizza
	Feedback da resposta:
	This is correct. 75% of City Pizza deliveries take between 25 and 35 minutes while less than 50% of Big Slice deliveries take between 25 and 35 minutes.
	
	
	
Pergunta 7
0 em 1 pontos
	
	
	
	Skills: Calculate appropriate conditional percentages. Identify subjects and variables
"multiple choice" question: select the correct answer. Which numbers would be used to convert to a percentage for Male, Not Enough?
	
	
	
	
		Resposta Selecionada:
	 
73/110
	Resposta Correta:
	 
73/440
	
	
	
Pergunta 8
1 em 1 pontos
	
	
	
	Skills: Identify subjects and variables Generate numerical measures of center of spread of the distribution of a quantitative variable and use them to summarize the distribution.
"multiple choice" question: select the correct answer.
Based on the collected data we can say that approximately 68% of the self-employed individuals work:
	
	
	
	
		Resposta Selecionada:
	 
between 39 and 55 hours
	Resposta Correta:
	 
between 39 and 55 hours
	Feedback da resposta:
	This is correct. By the Standard Deviation Rule, approximately 68% of self-employed individuals work between 47−8=39and 47+8=55 hours.
	
	
	
Pergunta 9
1 em 1 pontos
	
	
	
	Skills: Generate graphical displays of the distribution of a quantitative variable and use them to summarize the overall pattern of the distribution.
Identify subjects and variables"multiple choice" question: select the correct answer. 
The side-by-side boxplots below display the delivery time distributions (in minutes) of two pizza shops – “Big Slice” and “City Pizza”
75% of Big Slice deliveries take: 
	
	
	
	
		Resposta Selecionada:
	 
More than 25 minutes
	Resposta Correta:
	 
More than 25 minutes
	Feedback da resposta:
	This is correct.
	
	
	
Pergunta 10
0 em 1 pontos
	
	
	
	Skills: Identify subjects and variablesGenerate numerical measures of center of spread of the distribution of a quantitative variable and use them to summarize the distribution.
"multiple choice" question: select the correct answer. Here again, is the distribution of number hours of exercise per week for 50 male college student:
Which of the following is a possible value of the median of this distribution?
	
	
	
	
		Resposta Selecionada:
	 
10
	Resposta Correta:
	 
8
	
	
	
Sexta-feira, 18 de Outubro de 2019 18h13min20s BRT
	
	
Pergunta 3
1 em 1 pontos
	
	
	
	Skills: 
Identify direction
Identify subjects and variables
Assess strengthIdentify form
"Fill in the blank" question: select the correct answer. This is a scatter plot showing the amount of sleep needed per day by age. What type of relationship is represented between age and hours of sleep needed? The direction of this relationship is . In the context of this example, this means that as we age we tend to need sleep. The form of the relationship tends to be and
	
	
	
	
		Resposta Selecionada:
	 
negative
	Resposta Correta:
	 
negative
	Feedback da resposta:
	Correct! The direction is sloping downward, which indicates a negative relationship. Great job!
	
	
	
Pergunta 5
1 em 1 pontos
	
	
	
	Skills: Calculate appropriate conditional percentages.
Identify subjects and variables "multiple choice" question: select the correct answer. 
What is the correct percentage conversion of Too Many sodas for the Female response?
	
	
	
Pergunta 8
0 em 1 pontos
	
	
	
	Skills: Summarize the distribution of a categorical variable. Identify subjects and variables
"multiple choice" question: select the correct answer. A June 2017 poll asked a random sample of 2,500 U.S. adults the following question:Which comes closest to your view about the 2010 health care law (Obamacare)? The law is working well and should be kept in place as is;There are some good things in the law, but some changes are needed to make it work better;The law has so much wrong with it that it needs to be repealed entirely.The following pie-chart represents the distribution of responses:
Which of the following statements is true regarding what we can learn from the above distribution?
	
	
	
	
		Resposta Selecionada:
	 
Roughly twice as many U.S. adults feel that changes are needed to the the 2010 healthcare law compared to those who would like to see it completely repealed.
	Resposta Correta:
	 
All of the above statements are true.
	
	
	
Pergunta 10
0 em 1 pontos
	
	
	
	Questions 1-3 are related to the following information:
A college professor records the following information for each of the 55 students enrolled in her class:
• Gender
• Year (Freshman, Sophomore, Junior, Senior)
• Number of missed classes
• Midterm score
• Extra credit (1 – Submitted, 2 – Not submitted)
• Final exam score
Skills: Understand the structure of a data set and identify different type of variables. Identify subjects and variables
"multiple choice" question: select the correct answer. 
What are the individuals in this dataset?
	
	
	
	
		Resposta Selecionada:
	 
The six pieces of information recorded on each student
	Resposta Correta:
	 
The 55 students enrolled in the professor’s class
	
	
	
Pergunta 1
1 em 1 pontos
	
	
	
	Questions 1-3 are related to the following information:
A college professor records the following information for each of the 55 students enrolled in her class:
• Gender
• Year (Freshman, Sophomore, Junior, Senior)
• Number of missed classes
• Midterm score
• Extra credit (1 – Submitted, 2 – Not submitted)
• Final exam score
Skills: Understand the structure of a data set and identify different type of variables.Identify subjects and variables
"multiple choice" question: select the correct answer. 
Which of the following is a categorical variable?
	
	
	
	
		Resposta Selecionada:
	 
Extra credit (1 – Submitted, 2 – Not submitted)
	Resposta Correta:
	 
Extra credit (1 – Submitted, 2 – Not submitted)
	Feedback da resposta:
	This is correct.
	
	
	
Pergunta 2
0 em 1 pontos
	
	
	
	Skills: Calculate appropriate conditional percentages. Identify subjects and variables
"multiple choice" question: select the correct answer. Which numbers would be used to convert to a percentage for Female, About Right?
	
	
	
	
		Resposta Selecionada:
	 
560/1200
	Resposta Correta:
	 
560/760
	
	
	
Pergunta 3
1 em 1 pontos
	
	
	
	Question 6—11 are related to the following information:The histogram below displays the distribution of the number of hours of exercise per week for 50 male college students:
Skills: Generate graphical displays of the distribution of a quantitative variable and use them to summarize the overall pattern of the distribution.Identify subjects and variables
"multiple choice" question: select the correct answer. What percentage of the students exercise less than 9 hours per week?
	
	
	
	
		Resposta Selecionada:
	 
64%
	Resposta Correta:
	 
64%
	
	
	
Pergunta 4
1 em 1 pontos
	
	
	
	Skills: Identify subjects and variablesGenerate numerical measures of center of spread of the distribution of a quantitative variable and use them to summarize the distribution.
"multiple choice" question: select the correct answer. Here again, is the distribution of number hours of exercise per week for 50 male college student:
What are appropriate numerical measures of center and spread in this case?
	
	
	
	
		Resposta Selecionada:
	 
None of the above.
	RespostaCorreta:
	 
None of the above.
	Feedback da resposta:
	This is correct. Since the distribution is skewed right (with one possible high outlier), the appropriate numerical measure of center and spread are the median and IQR.
	
	
	
Pergunta 5
0 em 1 pontos
	
	
	
	Skills: Identify subjects and variablesGenerate numerical measures of center of spread of the distribution of a quantitative variable and use them to summarize the distribution.
"multiple choice" question: select the correct answer. Here again, is the distribution of number hours for exercise per week of 50 male college student:
If the largest observation (23 hours) was wrongly recorded as 230 hours. How would that effect the mean, median and the standard deviation of this distribution?
	
	
	
	
		Resposta Selecionada:
	 
The median and standard deviation will increase, but the mean will not change.
	Resposta Correta:
	 
The mean and standard deviation will increase, but the median will not change.
	
	
	
Pergunta 7
1 em 1 pontos
	
	
	
	Skills: Calculate appropriate conditional percentages.
Identify subjects and variables "multiple choice" question: select the correct answer. 
What is the correct percentage conversion of Too Many sodas for the Female response?
	
	
	
	
		Resposta Selecionada:
	 
21.5%
	Resposta Correta:
	 
21.5%
	Feedback da resposta:
	Correct! You used Females and Too Many. Great job!
	
	
	
Pergunta 8
1 em 1 pontos
	
	
	
	Questions 1-3 are related to the following information:
A college professor records the following information for each of the 55 students enrolled in her class:
• Gender
• Year (Freshman, Sophomore, Junior, Senior)
• Number of missed classes
• Midterm score
• Extra credit (1 – Submitted, 2 – Not submitted)
• Final exam score
Skills: Understand the structure of a data set and identify different type of variables. Identify subjects and variables
"multiple choice" question: select the correct answer. 
What are the individuals in this dataset?
	
	
	
	
		Resposta Selecionada:
	 
The 55 students enrolled in the professor’s class
	Resposta Correta:
	 
The 55 students enrolled in the professor’s class
	
	
	
Pergunta 9
1 em 1 pontos
	
	
	
	Skills: Identify subjects and variablesGenerate numerical measures of center of spread of the distribution of a quantitative variable and use them to summarize the distribution.
"multiple choice" question: select the correct answer. Here again, is the distribution of number hours of exercise per week for 50 male college student:
Which of the following is a possible value of the median of this distribution?
	
	
	
	
		Resposta Selecionada:
	 
8
	Resposta Correta:
	 
8
	
	
	
Pergunta 10
0 em 1 pontos
	
	
	
	Skills: Identify subjects and variablesGenerate numerical measures of center of spread of the distribution of a quantitative variable and use them to summarize the distribution.
"multiple choice" question: select the correct answer. Here is the Five Number Summary of students’ scores on a midterm:
min=40Q1=70M=88Q3=93max=100
Which of the following is true?
	
	
	
	
		Resposta Selecionada:
	 
Only the largest observation is classified as an outlier. 
	Resposta Correta:
	 
Neither the smallest nor the largest observations are classified as outliers.