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The table gives enrollments at North Shore High School.
a. Find the equation of the regression line. Round the slope and
y- intercept to the nearest hundredth.
b. What is the slope of the linear regression line?
c. What are the units of the slope expressed as a rate?
d. Based on the linear regression line, how many students will be
enrolled in the year 2016? Round to the nearest integer.

e. Is your answer to part d an example of interpolation or extrapolate-
tion? Explain.

f. Find the correlation coefficient to the nearest hundredth.
g. Describe the correlation.

Year Enrollment
2006/ 801
2007 /834
2008/ 844
2009/ 897
2010/ 922

Sagot :

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