Scatter plots

The school's guidance department compares the grade-point averages and standardized state test scores for 10 students in each grade. The table below shows the correlation coefficient for each data set.

12th grade data set

about how many guest will visit the pool at 85 Temperature

26 guest

Home runs mario hits during his first

35 home runs

If the equation for the line of best fit is y = 4.5x + 2 which of the following can be used to interpret the y-intercept in context?

Employees are likely to bring 2 customer la with them when changing jobs

Pilots believes that the equation of the line of best fit for the following scatterplot y=5/6x31/6

Paloma equation has a positive slope

The line of best fit for the scatter plot below passes through which pair of point

R and Q

Which phrase best describes the scatter plot below

A. Strong negative

what interpretation describes a line of best fit of y=-1.5x+173 for th data

A. The member can tolerate

Which scatterplot has a correlation coefficient closest to r = 1

B

For which data set is a linear regression most reasonable

C. A set of four data pairs with correlation coefficient r=-0.8

The fuel efficiency of one type of car is recorded in a scatterplot where the amount of gas used, x gallons ), is paired with the distance Naveled , ymiles) , for various trips. The equation for the line of best for the data is y = 28x How can the and

The y-intercept is which represents the amount of gas used when miles are traveled. The slope is 28, which represents the miles that can be traveled with 1 gallon of gas.

A set of data has a correlation coefficient r = 0.15 . Is it reasonable to use the line of best fit to make predictions from the data? no explan your reason

Which of the following did you include in your answer ? It is not reasonable to use the line of best fit to make predictions. The correlation coefficient for the data is close to zero The correlation coefficient measures how well a line fits a set of data . The correlation coefficient suggests that the relationship between the two variables is weak