You are a researcher who is interested in how watching television influences children’s performance in school. You find out how many hours of television 5 children watch, on average, in a week. You have obtained their overall grade average. Child No. Hours of TV Overall Grade Average 1 5 80 2 20 67 3 6 75 4 14 70 5 12 80 Calculate the correlation between hours of television watched and overall grade average. Interpret the correlation – what does it mean?             Calculate the regression equation (use television watching to predict grade). Make a scatter plot of the data and draw the line of best fit on your scatter plot.

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ISBN:9780470458365
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Chapter2: Second-order Linear Odes
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You are a researcher who is interested in how watching television influences children’s performance in school. You find out how many hours of television 5 children watch, on average, in a week. You have obtained their overall grade average.

Child No.

Hours of TV

Overall Grade Average

1

5

80

2

20

67

3

6

75

4

14

70

5

12

80

  1. Calculate the correlation between hours of television watched and overall grade average. Interpret the correlation – what does it mean?            
  2. Calculate the regression equation (use television watching to predict grade).
  3. Make a scatter plot of the data and draw the line of best fit on your scatter plot.
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