Correlation, Regression

Feb 3rd, 2012
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Answered below a) How to find correlation? b) How to find regression equation? c) What is intercept? d) What is slope? e) Find Y for a given value of X?

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For the following questions, you can use the SET command to enter the data, the CORR command to calculate correlation coefficients, and the REGR command to do the regression. Type HELP SET , HELP CORR or HELP REGR for information on how to use these commands.A student wonders if people of similar heights tend to date each other. She measures herself and five other women in her hall of residence. She then measures the height of the next person each woman dates. Here are the data (all heights in inches):Women666466657065Their Dates726870687165Treat the height of the women from the hall of residence as the predictor and the height of their date as the response.Q1The sample standard deviation of the y values is closest to:a.2.09b.2.53c.6.40d.4.40A.ANSWER - 2.53Q2A The sample mean of the y values isA.ANSWER - 69Q3The sample correlation of the x and y v

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