Togetherness Are good grades in high school associated with family togetherness? A random sample of 142 high
Question:
Togetherness Are good grades in high school associated with family togetherness? A random sample of 142 high school students was asked how many meals per week their families ate together. Their responses produced a mean of 3.78 meals per week, with a standard deviation of 2.2. Researchers then matched these responses against the students’ grade point averages (GPAs). The scatterplot appeared to be reasonably linear, so they created a line of regression. No apparent pattern emerged in the residuals plot. The equation of the line was GPA^=2.73+0.11 Meals.
1. Interpret the y-intercept in this context.
2. Interpret the slope in this context.
3. What was the mean GPA for these students?
4. If a student in this study had a negative residual, what did that mean?
5. Upon hearing of this study, a counselor recommended that parents who want to improve the grades their children get should get the family to eat together more often. Do you agree with this interpretation? Explain.
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1 If no meals are eaten together the model predicts a GPA of 273 2 For ...View the full answer
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