The table below gives the number of hours spent unsupervisedeach day as well as the overall grade averages for seven randomlyselected middle school students. Using this data, consider theequation of the regression line, yˆ=b0+b1xy^=b0+b1x, for predictingthe overall grade average for a middle school student based on thenumber of hours spent unsupervised each day. Keep in mind, thecorrelation coefficient may or may not be statistically significantfor the data given. Remember, in practice, it would not beappropriate to use the regression line to make a prediction if thecorrelation coefficient is not statistically significant.
| Hours Unsupervised | 1 | 2 | 2.5 | 3 | 4 | 5 | 5.5 |
|---|
| Overall Grades | 95 | 91 | 85 | 72 | 64 | 62 | 61 |
|---|
