Freshmen Enrollment OLCHS 2000-2009
560
540
520
500
Year
X = 0 is 2000
0
1
2
3
4
5
6
7
8
9
9
Freshmen
enrolled
411
375
400
453
526
504
517
472
552
517
480
460
440
420
400
380
360
(3)a.
(1).
(1)C.
Make a scatter plot for the data. This means you
must label the axes AND plot the points.
1 2 3 4 5 6 7 8 9 10
Year
Draw in a trend line (line of best fit).
What does the ordered pair (2,400) mean in the context of the data being studied?
it means that's how much students enrolled
Use the calculator to find the linear regression equation. (Round to the tenths place - 1 decimal place)
(3d.
(1). What is the slope of your regression line?
(2).
What does the slope mean in the context of this data?
(3) Using your equation from part d, what would you expect the enrollment of freshmen to be in the
year 2012 (12)? Interpret your solution in a sentence. Show work.
(2h.
What is the correlation coefficient for this data set to four decimal places?
(2).
Is there a positive, negative or no correlation? Explain how you know
positive
Explain its increasing
Is there a strong, moderate, or weak correlation? Explain how you know.
strong
Explain: increasing
(2)