Avaliação Statistics 1

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● Pergunta 1 
● 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 16% of self-employed individuals work less than how 
many hours per week? 
 
 
Resposta Selecionada: 
39 
Resposta Correta: 
39 
 
Feedback
da 
respo
sta: 
This is correct. Based on the Standard Deviation 
Rule approximately 68% of self-employed 
individuals work between 39 and 55 hours. 
This means that approximately 16% of 
self-employed individuals work less than 39 
hours and 16% work more than 55 hours. 
 
 
● 
Pergunta 2 
● 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 3 
● 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 
respo
sta: 
This is correct. By the Standard Deviation Rule, 
approximately 68% of self-employed 
individuals work between 47−8=39and 
47+8=55 hours. 
 
 
● 
Pergunta 4 
● 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. 
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 a larger percentage of deliveries that take 
between 25 and 35 minutes? 
 
 
Resposta Selecionada: 
Big Slice 
Resposta Correta: 
City Pizza 
 
 
● 
Pergunta 5 
● 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 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. Here again, is the 
distribution of number hours of exercise per week for 50 male college
student: 
Which of the following best describes the shape of the distribution? 
 
 
Resposta Selecionada: 
Skewed right with one possible outlier 
Resposta Correta: 
Skewed right with one possible outlier 
 
 
● 
Pergunta 7 
● 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 8 
● 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 9 
● 0 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: 
positive 
Resposta Correta: 
negative 
 
 
● 
Pergunta 10 
● 1 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 
Selecion
ada: 
 
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. 
 
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.