Question

To visually approximate the line of best fit, we follow the steps:

a) Draw the most convincing line that equally divides all the points.

b) Spot two centrally looking points and imagine drawing line that passes through the points.

c) Find the equation of the line in point-slope form, i.e., $y-y_1=m(x-x_1)$, where $m=\frac{y_2-y_1}{x_2-x_1}$

d) Search for the line that have equal number of points above and below that line.

Arrange the above steps in correct order, and choose the correct option.

• A. $a\to b\to c\to d$
• B. $b\to c\to d\to a$
• C. $b\to d\to a\to c$
• D. None of the above.

Answer 1

The correct option is C $b\to d\to a\to c$

To visually approximate the line of best fit, we sequentially follow the steps:

1. Spot two centrally looking points and imagine drawing a line that passes through the points.

2. Search for the line that has equal number of points above and below it.

3. Draw the most convincing line that equally divides all the scattered points.

4. Find the equation of the line in point-slope form, i.e., $y-y_1=m(x-x_1)$, where $m=\frac{y_2-y_1}{x_2-x_1}$