Linear Regression (4-6)



Linear Regression (4-6)

Linear Regression

• A precise best-fit line found by computers

Correlation coefficient (r)

• Tells you if your correlation is positive or negative

• The closer the correlation coefficient is to 1 or -1, the more closely the equation models the data.

TI-83 or TI-84

• Enter the data:

o [pic]

o Edit

o x-values ( L1

o y-values ( L2

• Calculate Linear Regression (equation of best fit line) and Correlation Coefficient

o [pic]

o CALC

o LinReg (ax+b)

o [pic] [pic]

[pic]

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