Linear and Quadratic Regression

Curve Fitting: Linear or Quadratic? Ellen and Kelly meditate Ellens new car in an empty repose lot. They mark a braking line where Ellen applies the brakes. Kelly them measures the distance from that line to the baffle where Ellen stops. Below is the relationship of their speed and stopping distance. Speed (mi/h)| 5| 10| 15| 20| 25| Stopping subdue (ft)| 7| 17| 30| 46| 65| A linear reasoning backward shows the relation in a chase away plot of data. The relapsing is represented by a peachy line entered to the graph to show how unshakable the coefficient of correlational statistics coefficient is. A quadratic polynomial polynomial retroversion is a parabola that shows the relation between data on a spit plot, to show how strong the correlation is. To find out whether a linear regression or a quadratic regression organized the data more than accurately I measured each regression on my ready reckoner and looked at which correlation coefficient was stron ger. To find the linear regression I used my calculator and went to stat and typed in the data consequently went to Stat Calc - LinReg(ax+b) Calc. It gave me the formula for the data on the scatter plot. Y = 2.9x + 10.5 and the correlation coefficient is .9925. This means the correlation is real strong since it is close to 1. The nestled the correlation coefficient is to 1 or -1 the stronger it is. To find the quadratic regression I went to Stat Calc QuadReg Calc. The formula was y = .06x + 1.1 and the correlation coefficient was 1. This means the quadratic regression fits the data perfectly. utilise the information that I collect between the two regressions, quadratic regression is the best answer. (EXCEL) An causa of a job or career that requires linear and quadratic regressions is an Actuary. They use data to herald trends for insurance companies. Such as how long people born(p) in a reliable year, or in a particular region, would be judge to live, or how many traffic accidents they get out have, or wha! t it will cost them for health care during their lifetime. These...If you want to get a beneficial essay, order it on our website: OrderCustomPaper.com

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