One gallon of gasoline in buffalo, new york costs 2.99. in toronto, canada, one liter of gasoline costs 0.91. there are 3.8 liters in one gallon.

Arandom high school question but a hard one

For each expression use a property to write an equivalent expression.

17. a researcher measures three variables, x, y, and z for each individual in a sample of n = 20. the pearson correlations for this sample are rxy = 0.6, rxz = 0.4, and ryz = 0.7. a. find the partial correlation between x and y, holding z constant. b. find the partial correlation between x and z, holding y constant. (hint: simply switch the labels for the variables y and z to correspond with the labels in the equation.) gravetter, frederick j. statistics for the behavioral sciences (p. 526). cengage learning. kindle edition.