LilaSmith97
New member
- Joined
- Sep 19, 2012
- Messages
- 1
1. Which graph is a scatter plot of the data from the table, click the links!
http://www.flickr.com/photos/66162493@N03/8001676622/
( A OR B) http://www.flickr.com/photos/66162493@N03/8001675249/
(C OR D) http://www.flickr.com/photos/66162493@N03/8001676662/
2. Which set of ordered pairs and equation for a best-fit line represents data from the table?
http://www.flickr.com/photos/66162493@N03/8001675159/
A. (x1, y1) = (64, 135), (x2, y2) = (74, 166)
y = 3.875x – 120.75
B. (x1, y1) = (62, 131), (x2, y2) = (70, 152)
y = 2.625x – 31.75
C. (x1, y1) = (62, 131), (x2, y2) = (72, 158.5)
y = 2.75x – 12
D.(x1, y1) = (64, 130), (x2, y2) = (72, 158.5)
y = 3.5625x – 98
5. Use a graphing calculator to determine which equation for the line of regression, Pearson product-moment correlation value (r), and predicted value match the data in the chart. The chart below shows the number of hours a student spent studying for a math test and the score the student earned on the test.
Hours Spent Studying | 0.5|1.25| 1.5 |1.75 |2 | 2.5 |3 |3.5 |4 |
Test Score | 90 | 75| 60 | 83 |75| 80| 99| 97| ? |
A. y = 6.4x + 69.5, r = 0.48
Predicted test score for 4 hours of study equals 95.
B. y = 6.1x + 74.5, r = 0.48
Predicted test score for 4 hours of study equals 99.
C.y = 5.1x + 74.5, r = 0.88
Predicted test score for 4 hours of study equals 95.
D. y = 7.4x + 69.5, r = 0.88
Predicted test score for 4 hours of study equals 99.
http://www.flickr.com/photos/66162493@N03/8001676622/
( A OR B) http://www.flickr.com/photos/66162493@N03/8001675249/
(C OR D) http://www.flickr.com/photos/66162493@N03/8001676662/
2. Which set of ordered pairs and equation for a best-fit line represents data from the table?
http://www.flickr.com/photos/66162493@N03/8001675159/
A. (x1, y1) = (64, 135), (x2, y2) = (74, 166)
y = 3.875x – 120.75
B. (x1, y1) = (62, 131), (x2, y2) = (70, 152)
y = 2.625x – 31.75
C. (x1, y1) = (62, 131), (x2, y2) = (72, 158.5)
y = 2.75x – 12
D.(x1, y1) = (64, 130), (x2, y2) = (72, 158.5)
y = 3.5625x – 98
5. Use a graphing calculator to determine which equation for the line of regression, Pearson product-moment correlation value (r), and predicted value match the data in the chart. The chart below shows the number of hours a student spent studying for a math test and the score the student earned on the test.
Hours Spent Studying | 0.5|1.25| 1.5 |1.75 |2 | 2.5 |3 |3.5 |4 |
Test Score | 90 | 75| 60 | 83 |75| 80| 99| 97| ? |
A. y = 6.4x + 69.5, r = 0.48
Predicted test score for 4 hours of study equals 95.
B. y = 6.1x + 74.5, r = 0.48
Predicted test score for 4 hours of study equals 99.
C.y = 5.1x + 74.5, r = 0.88
Predicted test score for 4 hours of study equals 95.
D. y = 7.4x + 69.5, r = 0.88
Predicted test score for 4 hours of study equals 99.
