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Do NowWomen (x):666466657065Men (y): 726870687165Using your calculator, make a scatterplot. Describe the direction, strength, form, and any outliers of the relationship between men and women.

A student wonders if tall women tend to date taller men than do short women. She measures herself, her dormitory roommate, and the women in the adjoining rooms. Then she measures the next man each women dates. Here are the data (heights in inches):1Correlation CoefficientUnit 1: Data Exploration2ObjectivesCalculate and interpret the correlation coefficient (r)GRITWorks independently with focusRESPECTKnows when and how to include othersRESPONSIBILITYGets to work right away rather than procrastinatingLOVE OF LEARNINGIs eager to explore new thingsCorrelation rCorrelation (r): measures the direction and strength of the linear relationship between two quantitative variablesr = correlationr < 0 Negative associationr > 0 Positive associationr = 0 No correlationCorrelation does NOT equal slope!

Correlation EquationUsing Calculator:STAT > EDIT Enter x-values in L1Enter corresponding y-values in L2STAT > CALC > 4:LinReg (ax+b)Xlist: L1Ylist: L2Enter!r is your correlation coefficient (NOT r2)

Calculate the Correlation r for the relationship between women and mens heights.Women (x):666466657065Men (y): 726870687165Using Calculator:STAT > EDIT Enter x-values in L1Enter corresponding y-values in L2STAT > CALC > 8:LinReg (a+bx)Xlist: L1Ylist: L2Enter!r is your correlation coefficient (NOT r2)Facts about CorrelationCorrelation does not change when we change the units.Correlation does not describe curved relationships between variables. A correlation of 0 does not mean there is no relationship.Correlation is strongly effected by outliers.

Facts about CorrelationWhat happens to correlation if we do not include the 70 inch woman and the 71 inch man?

2. If heights were measured in centimeters rather than inches, how would the correlation change? (There are 2.54 cm in an in)A student wonders if tall women tend to date taller men than do short women. She measures herself, her dormitory roommate, and the women in the adjoining rooms. Then she measures the next man each women dates. Here are the data (heights in inches):Women (x):666466657065Men (y): 726870687165Independent Practice

10 minutesGRITWorks independently with focusRESPECTKnows when and how to include othersRESPONSIBILITYGets to work right away rather than procrastinatingLOVE OF LEARNINGIs eager to explore new thingsIndependent Practice and HomeworkCorrelation Coefficient Quiz to be scanned upon walking into class on Friday. Reading Response

Unit 1 Exam Reflection

Unit 1 Exam ReflectionPeriodReview Packet CompletionPractice Assessment Completion540%50%64%10%810%0%Unit 1 Project Reflection