AP Stats Chapter 8

Quiz by Corey Klein

Feel free to use or edit a copy

includes Teacher and Student dashboards

Measure skillsfrom any curriculum

Tag the questions with any skills you have. Your dashboard will track each student's mastery of each skill.

• edit the questions
• save a copy for later
• start a class game
• view complete results in the Gradebook and Mastery Dashboards
• automatically assign follow-up activities based on students’ scores
• assign as homework
• share a link with colleagues
• print as a bubble sheet

Our brand new solo games combine with your quiz, on the same screen

Correct quiz answers unlock more play!

10 questions
• Q1
What type of graph is used to show the relationship between two quantitative varialbes
scatterplot
120s
• Q2
The correlation r for the data in this scatterplot is
near 1
near -.5
near 0
near -1
120s
• Q3
In the scatterplot , if each x-value were decreased by one unit and the y-values remained the same, then the correlation r would
remain the same
increase slightly
you cannot tell
decrease slightly
120s
• Q4
In regression, the residuals are which of the following?
possible models unexplored by the investigator
the difference between the observed responses and the values predicted by the regression line
those data points which were recorded after the formal investigation was completed
those factors unexplained by the data
120s
• Q5
What does the square of the correlation measure?
the strength of the linear association between the variables
the slope of the LSRL
the intercept of the LSRL
the percent of the variation in the values of y that is explained by the variation in the values of x
120s
• Q6
Which of the following statements are true? I. Correlation and regression require explanatory and response variables. II. Scatterplots require that both variables be quantitative. III. Every LSRL passes through the mean of x and y
I, II, and III
I, and III only
II and III only
I and II only
120s
• Q7
A local community college announces the correlation between college entrance exam grades and scholastic achievement was found to be -1.08. On the basis of this, you would tell the college that
the college should hire a new statistician.
the exam is a poor predictor of success.
students who do best on this exam will be poor students.
students at this school are underachieving.
120s
• Q8
120s
• Q9
Suppose we fit the LSRL to a set of data. What is true if a plot of the residuals shows a curved pattern?
Outliers must be present.
A straight line is not a good model for the data.
LSRL is a good fit.
The correlation must be positive.
120s
• Q10
The following is / are resistant to drastic, unusual data:
correlation coefficient
neither the least squares line nor the correlation coefficient
both the least squares line and the correlation coefficient
least squares line
120s

Teachers give this quiz to your class