Question

PLEASE HELP!!!!
When using the Desmos graphing calculator to find the least-squares regression line for the data below, what do you type in as the expression to generate the parameters and statistics?

x subscript 2 baseline y subscript 2 baseline
1 2
2 9
3 7
4 12

y subscript 2 baseline tilde m x subscript 2 baseline plus b


y subscript 2 baseline equals m x subscript 2 baseline plus b


y tilde m x plus b


y = mx + b

Answer 1

Given: The Table of Values

To Find: The least-squares regression line for the data set in the table by using the desmos graphing calculator.

SolutionThe general form of least-squares regression line is: y = mx + b Where, m is the slope and b is the y-intercept.

Where, m is the slope and b is the y-intercept.By using the desmos graphing calculator, we get

m 2.55 b -6.435 Substitute these Values

y = (2.55)x + (-6.435)

y = 2.55x - 6.435

Answer: A