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# Quiz_3Completed - Quiz#3 NAME MA 223 Engineering Statistics...

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Quiz #3 NAME:_______________________________________________ MA 223, Engineering Statistics Winter 2007-08; 10 points possible CM Box #:_________________________ Chapter 3, Correlation and Simple Linear Regression Due: by Friday , December 21 at the BEGINNING of class . Answer each of the following. 1. [2 pts] For each of the following bivariate data situations, indicate what you would expect to be the value of the Pearson sample correlation coefficient, . Be as specific as possible; for example, if the data set consists of measurements of femur length ( x ) and heighth ( y ) for randomly selected Rose students, a good answer would be “Positive and close to 1”. (a) [0.5 pts] The “Lucky Dogs” street vending company collects data monthly on the number of Lucky Dogs sold ( x ) and the gallons of mustard used ( y ) at each of their hot dog wagons. Positive and close to 1 (b) [0.5 pts] Donnie Dunker, a doughnut enthusiast and avid Chicago Bears fan, has for twenty football seasons kept record of the Friday closing trading price of Dunkin’ Donuts stock ( x ) and the number of points scored by the Bears ( y ).

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Quiz_3Completed - Quiz#3 NAME MA 223 Engineering Statistics...

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