Scatterplots - Quiz Quiz Answers

The line of best fit for the scatterplot passes through which of the following pair of points?

The scatterplot shows the number of athletes on the field hockey and tennis teams at Southern High School during seven different years. Which statement is best supported by the line of best fit?

The scatterplot shows the number of home runs Mario hits during his first four seasons on the company softball team. If his output continues to follow the linear model, approximately how many home runs will Mario hit during his ninth season?

Which scatterplot has a correlation coefficient closest to r is equal to 1 ?

A scatterplot is used to display data for a runner where x is the number of miles run, and y is the time, in minutes, that it takes to run that distance. Which interpretation describes a line of best fit of y is equal to 9 point 5 x for the data in the scatterplot?

For which data set is a linear regression most reasonable?

A scatterplot is used to display data where x is the amount of time, in minutes, one member can tolerate the heat in a sauna, and y is the temperature, in degrees Fahrenheit, of the sauna. Which interpretation describes a line of best fit of y is equal to negative 1 point 5 x plus 173 for the data?

For several years, Graham has gathered data on students who own a computer and on their performance on a typing-speed test. He creates the linear model y is equal to 3 point 8 x plus 17 point 4 where y represents the typing speed, in words per minute, of a student and x represents the number of years the student has owned a computer. According to Graham’s model, what is the approximate speed of a student who has owned a computer for three years?

For which scatterplot is the correlation strongest?