**TI83F* AppVariable file 12/24/08, 18:22Ï ¾GLA104¾¼nav 868E89BEB1644A6EA4327E33887122BEGLA104.,GLA1041  absolute value function babsolute value function:ÖA function written as f(x) = |x|, where f(x)  0 for all values of x.  best-fit lineRbest-fit line:ÖThe line that most closely approximates the data in a scatter plot. bivariate data(bivariate data:ÖData with two variables. correlation coefficientPcorrelation coefficient:ÖA value that shows how close data points are to a line. greatest integer function €greatest integer function:ÖA step function, written as f(x) = Á|x|], where f(x) is the greatest integer less than or equal to x.  line of fitKline of fit:ÖA line that describes the trend of the data in a scatter plot. linear extrapolationhlinear extrapolation:ÖThe use of a linear equation to predict values that are outside the range of data. linear interpolationhlinear interpolation:ÖThe use of a linear equation to predict values that are inside of the data range.Ö  linear regressionPlinear regression:ÖAn algorithm to find a precise line of fit for a set of data.  median fit linetmedian fit line:ÖA type of best-fit line that is calculated using the medians of the coordinates of the data points.  parallel linesÕ!Uparallel lines:ÖLines in the same plane that never intersect and have the same slope.  perpendicular lines!aperpendicular lines:ÖLines which meet to form right angles and whose slopes have a product of -1.  piecewise-defined functionUpiecewise-defined function:ÖA function that is written using two or more expressions. piecewise functionEpiecewise function:ÖA function written using two or more expressions. point-slope formˆpoint-slope form:ÖAn equation of the form Öy - y1 = m(x - x1), where m is the slope and (x1, y1) is a given point on a nonvertical line.  scatter plotx !Sscatter plot:ÖA graph that shows the general relationship between two sets of data. slope-intercept formjslope-intercept form:ÖAn equation of the formÖy = mx + b, where m is the slope and b is the y-intercept.ÖÖ  step functionWstep function:ÖA function whose graph is a series of disjointed steps or line segments.8`0€ ÿÿÿÿÿÿÿÿÿÿþ0€ 0€ ÿÿÿÿÿÿÿÿÿÿþ0€ 8`HH>8p <<€ € € ƒÀ ƒÃÌ0 ÃÁžx Á€x € 0ˆ€0ÈÀx€ÈÀxÀˆ€0ÀÁ€`àðàðÀ``Èð`<èðð<è`ðÈ`@Àÿÿÿÿÿÿÿÿ€À€@È€(<(<(È>8`€À ÿ@`ÿÿÿÿÿÿð`@À€Ã_