Question
The table below gives the number of absences and the overall grade in the class for...
The table below gives the number of absences and the overall grade in the class for five randomly selected students. Based on this data, consider the equation of the regression line, yˆ=b0+b1x, for using the number of absences to predict a student's overall grade in the class. Keep in mind, the correlation coefficient may or may not be statistically significant for the data given. Remember, in practice, it would not be appropriate to use the regression line to make a prediction if the correlation coefficient is not statistically significant.
| Number of Absences | 0 | 1 | 2 | 4 | 9 |
|---|---|---|---|---|---|
| Grade | 87 | 77 | 69 | 55 | 52 |
Find the estimated value of y when x=9. Round your answer to three decimal places.
Determine if the statement "All points predicted by the linear model fall on the same line" is true or false.
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