LINEARNA REGRESIA PDF

Contents Linear Regression Linear regression is used to predict the value of an outcome variable Y based on one or more input predictor variables X. The aim is to establish a linear relationship a mathematical formula between the predictor variable s and the response variable, so that, we can use this formula to estimate the value of the response Y, when only the predictors Xs values are known. Introduction The aim of linear regression is to model a continuous variable Y as a mathematical function of one or more X variable s , so that we can use this regression model to predict the Y when only the X is known. Collectively, they are called regression coefficients.

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Hodnoty Popis Create your own scatter plot or use real-world data and try to fit a line to it! Explore how individual data points affect the correlation coefficient and best-fit line. Interpret the sum of the squared residuals while manually fitting a line.

Interpret the sum of the squared residuals of a best-fit line as a data point is added, moved, or removed. Compare the sum of the squared residuals between a manually fitted line and the best-fit line. Determine if a linear fit is appropriate. Standards Alignment Common Core - Math 8. Describe patterns such as clustering, outliers, positive or negative association, linear association, and nonlinear association. For scatter plots that suggest a linear association, informally fit a straight line, and informally assess the model fit by judging the closeness of the data points to the line.

For example, in a linear model for a biology experiment, interpret a slope of 1. Use given functions or choose a function suggested by the context. Emphasize linear, quadratic, and exponential models. Verzia 1.

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