Provide an appropriate response.Explain in your own words why equations of the form y = b have graphs that are horizontal lines.
What will be an ideal response?
The second coordinate of any point on the graph is b, regardless of the first coordinate, so the graph is a line parallel to the x-axis and ?b? units above or below it. Thus, the graph is a horizontal line.
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A statement is made about correlation. State whether the correlation is positive or negative and whether the correlation is most likely due to coincidence, a common underlying cause, or a direct cause.People who take more vacations score higher on standardized tests.
A. Positive correlation; coincidence B. Positive correlation; direct cause C. Negative correlation; common underlying cause D. Positive correlation; common underlying cause
Solve the problem.Construct a histogram and a frequency polygon for the given data. 
What will be an ideal response?
In 
, M and N are the midpoints of 
and 
as shown. Then:
A. 
B. 
C. 
D. None of These
2 3/4 + 4 7/8 =
a. 7 5/8 b. 6 5/8 c. 7 1/4 d. 5 3/4 e. 2 1/2