Interactive practice questions
The centroid for the data represented below is $\left(18.04,13.02\right)$(18.04,13.02) and the $y$y-intercept is an integer.
Find the equation of the least squares regression line. Give your answer in the form $y=ax+b$y=ax+b, where $a$a and $b$b are rounded to two decimal places if necessary. Use $a$a to represent the gradient in your working out if necessary.
The centroid for the data represented below is $\left(4.7,5.9\right)$(4.7,5.9) and the $y$y-intercept is an integer.
Find the equation of the least squares regression line. Give your answer in the form $y=ax+b$y=ax+b. Use $a$a to represent the gradient in your working out if necessary.
The least squares regression line is given by $y=a+bx$y=a+bx. An $x$x-value of $5$5 gives a predicted value of $y=9$y=9, and an $x$x-value of $8$8 gives a predicted value of $y=3$y=3.
Find the equation of the least squares regression line.
The least squares regression line is given by $y=a+bx$y=a+bx. An $x$x-value of $4$4 gives a predicted value of $y=3$y=3, and an $x$x-value of $6$6 gives a predicted value of $y=7$y=7.
Find the equation of the least squares regression line.