Is the number of games won by a major league baseball team in a season related to the team batting average? The table below shows the number of games won and the batting average (in thousandths) of 8 teams. Team Games Won Batting Average 1 94 272 2 110 289 3 68 288 4 62 282 5 92 285 6 87 290 7 100 287 8 79 266 Using games won as the explanatory variable x, do the following: (a) The correlation coefficient is r= ?. (b) The equation of the least squares line is y^= ?.

Is the number of games won by a major league baseball team in a season related to the team batting average? The table below shows the number of games won and the batting average (in thousandths) of 8 teams. Team Games Won Batting Average 1 94 272 2 110 289 3 68 288 4 62 282 5 92 285 6 87 290 7 100 287 8 79 266 Using games won as the explanatory variable x, do the following: (a) The correlation coefficient is r= ?. (b) The equation of the least squares line is y^= ?.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section: Chapter Questions

Problem 8CR

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Question

Team	Games Won	Batting Average
1	94	272
2	110	289
3	68	288
4	62	282
5	92	285
6	87	290
7	100	287
8	79	266

Using games won as the explanatory variable x, do the following:

(a) The correlation coefficient is r= ?.

(b) The equation of the least squares line is y^= ?.

Definition Definition Relationship between two independent variables. A correlation tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

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