Bivariate data set relating to work or business interests

Assignment Help Basic Statistics

Reference no: EM131808994

Question: Find a bivariate data set relating to your work or business interests on the Internet, in a newspaper, or in a magazine, with a sample size of n¼15 or more.

a. Give your choice of dependent variable (Y) and independent variable (X) and briefly explain your reasons.

b. Draw a scatterplot and comment on the relationship.

c. Compute the correlation coefficient and briefly interpret it.
d. Square the correlation coefficient and briefly interpret it.

e. Compute the least-squares regression equation and draw the line on a scatterplot of your data.

f. For two elementary units in your data set, compute predicted values for Y and residuals.

g. Find a confidence interval for the slope coefficient.

h. Test whether or not anything is being explained by your regression equation.

i. Choose a value of X. Find the expected value of Y for this X. Find the confidence interval for the Y value of an individual with this X value. Find the confidence interval for the population mean Y value for individuals with this X value. Summarize and interpret these results.

j. Comment on what you have learned by applying correlation and regression analysis to your data set.

Reference no: EM131808994

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