ib: trasketball y’all have a quiz on monday.. below is the least squares regression. reduce it...

IB: Trasketball

Y’all have a quiz on Monday.

Below is the least squares regression. Reduce it down to the “y = mx +b” form.

Find the Least Squares Regression line

Given the following data:

Sx =4.59

Sy =2.54

Sxy = 0.955

= 10.3 = 12.7


Given the following table:


Given the following data:

Sx = 13.6

Sy = 19.3

Sxy = 9.54

= 112 = 254


Given the following table:

Given the line, make a prediction for the y-value:

The Least Squares Regression:

X = 13.9


Y = mx + b:

y = 25.7x – 14.3

X = 4.2


The Least Squares Regression:

X = 5.44


Y = mx + b:

y = 32x + (-12.8)

X = (-2.7)

Identify the r-value from the graph:

Identify the r-value from the graph: (An educated guess…)

Identify the r-value from the data table:

Identify the r-value from the graph: (An educated guess)

Identify the r-value from the data table:

Identify the r-value from the graph: (It doesn’t have to be exact, just an estimate)

Change the following to three Significant Figures

10


50.178


0.067894


1.122657


16988.34


0.1333333

Can we use a linear regression?

X 16 18 21 21 13 22 19Y 12 7 6 7 20 3 8

Can we use a linear regression?

Tell me about r = 0.878

Strength?

Form?

Direction?

Tell me about r = -0.459

Strength?

Form?

Direction?

Tell me about r = .777

Strength?

Form?

Direction?

Tell me about r = 3.20

Strength?

Form?

Direction?

Solve.

=

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