# assign1 - MAR 5621: Advanced Managerial Statistics...

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MAR 5621: Advanced Managerial Statistics Assignment #1 (due in class Thursday, March 25) This assignment may be done either individually or in teams of 2 people. (Teams should turn in only one paper, with both members’ names on it.) Note: When reporting numerical results from Excel output, please round off the excessive decimals (2 or 3 significant digits are usually more than enough). Grading: Unless otherwise stated, all problems are worth 2 points per letter. *********************************** Problem 1: Age and News Viewing The News Division at Big Brother Media is interested in determining if there is a relationship between the age of an individual (in years) and the number of hours of TV news they watch per week (in hours). A random sample of 50 individuals is interviewed and each reports his/her age and the amount of TV news they watch per week. A summary of the data is as follows: Age (years) News Viewing (hours/week) Mean 36.0 8.0 Standard Deviation 10.5 3.5 Correlation coefficient r = 0.57 (a) Determine the equation of the regression line for predicting the amount of News Viewed, using Age as the predictor. (b) How much of the variability in News Viewing is explained by factors other than Age? (That is, how much variability is not explained by Age)? (c) Determine SSTotal, SSRegression, and SSResidual for this regression.

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assign1 - MAR 5621: Advanced Managerial Statistics...

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