Chapter 12 - Data Analysis and Probability - 12-1 Organizing Data Using Matrices - Practice and Problem-Solving Exercises - Page 731: 41

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X represents the products sold Y represents the commission earned As the number of products sold increases, the commission will also increase, so this is a positive correlation. There is a casual relationship because the greater the number of products the greater the commission, so the state of one changes or affects the state of the other factor.