* SCATTER PLOT – GRAPH WITH MANY ORDERS PAIRS * LINE OF BEST FIT – LINE DRAWN THROUGH DATA THAT BEST REPRESENTS IT

APPROXIMATE PERCENTAGE OF STUENTS WHO SENT APPLICATIONS TO TWO COLLEGES IN VARIOUS YEARS SINCE 1985 YEARS SINCE %

YEARS SINCE %

* SELECT TWO POINTS THAT APPEAR TO BEST FIT THE DATA * IGNORE OUTLIERS * DRAW LINE

* FIND SLOPE * WRITE EQUATION IN SLOPE-INTERCEPT FORM

* WHAT DOES THE SLOPE INDICATE? * WHAT DOES THE Y-INT INDICATE? * PREDICT % IN THE YEAR 2010 * HOW ACCURATE ARE PREDICTIONS?

* Regression Line  Line of best fit * Linear correlation coefficient (r) * The closer the value of r is to 1 or -1, the closer the data points are to the line. * -1 and 1 are the best numbers….0 is the worst