HW: Pg. 86-87 # 34-36, 43-45, 61
HW: Pg. 95-97 # 14-58 eoe, 59
Pg. 89 #1-10
Pg. 106 #1-4
2.5 Correlation and Best-Fitting Lines
Telephones Describe the correlation shown by each scatter plot.
Positive correlation, increasing
slope
Negative correlation, decreasing
slope
2.5 Animated Activity Online
CORRELATION OF X & Y:http://www.classzone.com/cz/books/algebra_2_2007_na/resources/applications/animations/explore_learning/chapter_2/dswmedia/5_4_correlations.html
2.5 Correlation and Best-Fitting LinesFor each scatter plot, (a) tell whether the data have a positive correlation, a negative correlation, or approximately no correlation, and (b) tell whether the correlation coefficient is closest to –1, – 0.5, 0, 0.5, or 1.
1.
ANSWER
1. (a) positive correlation
1. (b) r = 0.5
2.
ANSWER
2. (a) negative correlation
2. (b) r = –1
3.
ANSWER
3. (a) no correlation
3. (b) r = 0
2.5 Correlation and Best-Fitting Lines
2.5 Correlation and Best-Fitting Lines
ANSWER
Draw a scatter plot and approximate the best-fitting line for the data.
52 28 24 310 2 8
(28) ( ) 28 3 6
28
3 2
y 2
3
+28
2
y xy
m
x
x
2.5 Animated Activity Online
GRAY WHALE MIGRATION:http://www.classzone.com/cz/books/algebra_2_2007_na/resources/applications/animations/explore_learning/chapter_2/dswmedia/alg207_ch02_pg111.html
Homework:
Pg. 103-104 # 8-20e
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