![]() The linear regression below was performed on a data set with a TI calculator. According to the linear regression equation, what would be the approximate value of y when x = 3?.What is the correlation coefficient and the coefficient of determination? Is the linear regression equation a good fit for the data?.What is the linear regression equation?.Use the information shown on the screen to answer the following questions: Which of the following calculations will create the line of best fit on the TI-83?.This means that the linear regression equation is a moderately good fit, but not a great fit, for the data. You can see that r, or the correlation coefficient, is equal to 0.9486321738, while r 2, or the coefficient of determination, is equal to 0.8999030012. After pressing ENTER to choose LinReg(ax + b), press ENTER again, and you should see the following screen: In other words, to find the correlation coefficient and the coefficient of determination, after entering the data into your calculator, press STAT, go to the CALC menu, and choose LinReg(ax + b). The correlation coefficient and the coefficient of determination for the linear regression equation are found the same way that the linear regression equation is found. Is the linear regression equation a good fit for the data? A high-resolution display guarantees better readability and enables further functions, e.g.\)ĭetermining the Correlation Coefficient and the Coefficient of Determinationĭetermine the correlation coefficient and the coefficient of determination for the linear regression equation that you found in Example B.Buttons made of hard plastic with colour-coding.Battery operation with the support of solar cells to extend the battery life.High-resolution display with four lines of 16 characters.Seven memory variables (x, y, z, t, a, b, c).Fast/simple resetting the calculator via 2 keys or via a menu in the tests.18 conversions between metric/English System.One and two-variable statistics with continuous input memory for statistics variables.Basic Data/list editor with three lists.(X, Y) Tables function with the options car and demand for x.Angle Conversion of graduation in arc dimensions in gradient.Directly via buttons or pull-down menus to reach functions.1- and 2-variable statistics include results for linear regressions and trendline analysis. Central MODE menu for the selection of calculator mode settings The TI-30X IIS scientific calculator performs practical and.Random generator for numbers and integers.Change between illegal breaks and mixed numbers.Conversions of fractions/decimal/percentages. ![]()
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