1.) In a random sample of 10 on-line statistics students, information was collected about their minutes studied and their chapte
r test scores. X is the minutes studied, and Y is the test score.
x : {20,30,45,60,80,90,45,120,90,70} y: {50,45,55,70,80,90,80,100,95,85}
Is this relationship positive, negative or no relation?
I know that is a positive relationship
2.) Using the data from question #1, what is the equation of the line of best fit? (For future reference: line of best fit, linear regression equation, and least-squares line are all the same thing y=ax+b). Round your answers to the nearest tenth.
x : {20,30,45,60,80,90,45,120,90,70} y: {50,45,55,70,80,90,80,100,95,85}
Select one:
a. y= .6x -38.2
b. y= 38.2x + .6
c. y=.6x + 38.2
d. y= -.6x +38.2
3.)Determine whether a scatter plot of data for the following would be likely to show a positive, negative, or no relationship. height and shoe size
Select one:
a. Positive Relationship
b. Negative relationship
c. No Relationship
4.)Determine whether a scatter plot of data for the following would belikely to show a positive, negative, or no relationship.age and telephone number
Select one:
a. Postive relationship
b. Negative Relationship
c. No Relationship
