Examples of two quantitatives variables that can be related?

Two correlated variables may have no true relationship. True or false The correlation coefficient (r) tells us what percent of the variation in the dependent variable is explained by variation in the independent variable.  True or False Regression analysis can be linear or nonlinear.  True or False

If another variable systematically co-varies with the independent variable, then we likely have an extraneous variable b. a dependent variable an ex post facto design a confounding variable

A doctor notes the variables listed in the following table from every patient before admitting in his hospital.  Which of the following variables are qualitative and which are quantitative?  Which qualitative variables are nominal or ordinal? Which quantitative variables are discrete or continuous?   ( 1 )  Gender (Male or Female)   ( 2 ) Weight (lbs)   ( 3 ) Phone Number   ( 4 ) Height (cm)   ( 5 ) Marital Status (Single, Married, Divorce, Widow)   ( 6 ) Systolic Blood Pressure (mm of pressure)   ( 7 ) Temperature (degree F)   ( 8 ) Level of Calcium (microgram/milimeter)   ( 9 ) Family of Income ( Amount)   ( 10 ) Wihte Blood Cells

Principles is basic general truth about the cause and effect relationship between variables. True or false

Based on the regression equation, we can Multiple Choice measure cause and effect predict the value of the independent variable given a value of the dependent variable measure the association between two variables predict the value of the dependent variable given a value of the independent variable

what does regression analysis mean?  What can you tell from it?

In multiple regression analysis, a dummy variable is Multiple Choice a nominal variable with only two values an ordinal variable with three or more values a new regression coefficient an additional quantitative variable

Describe the difference between causation between two variables and a relationship between two variables.

Please define all variables and do all parts.