QuizCh10

# QuizCh10 - Math 300 – Quiz Chapter 10 Printed Name...

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Unformatted text preview: Math 300 – Quiz Chapter 10 Printed Name: Calculators are allowed on this test...neighbors are not ! Show work for credit. 1 Data concerning the number of absences and the ﬁnal grades of seven randomly selected students from a statistics class is shown below. Use 3 places after the decimal point. Student A B C D E F G A 5 pts Number of absences x 6 2 15 9 12 5 8 Final grade y (%) 82 86 43 74 58 90 78 Create a scatter plot of the data. 100 95 90 85 80 75 70 65 60 55 50 45 40 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ............................................................................................................................ B 5 pts Calculate the correlation coeﬃcient. ............................................................................................................................ C 5 pts Find the regression line. ............................................................................................................................ D 5 pts Dr. Emmert Spring 2011 Use your regression line to estimate the grade of a student with 10 absences. I of I Points Earned of 20 ...
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