TO DRAW A BEST LINE OF FITMr Ang JL 20 Aug 2013

Example 1 Can you deduce what is not right about this 'best

fit line' ?

3 points on left side of

lineOnly 1 point on right side

of line

Example 1

Shift line slightly

Example 1

Improvedbest line of fit

in red

Shift line slightly

Example 2 Can you deduce what is not

right about this 'best fit line' ?

3 points on left side of

line

Only 1 point on right side

of line

Example 2

Shift line slightly

Example 2

Improvedbest line of fit

in red

Shift line slightly

Example 3 Can you deduce what is not

right about this 'best fit line' ?

3 points on left side of

line at lower end

2 points on right side of upper end of

line

Example 3

Shift line slightly

Shift line slightly

Example 3

Shift line slightly

Shift line slightly

Improvedbest line of fit

in red