If X and Y Are Two Variables with E(XY)= 10

question 82

True/False

If X and Y are two variables with E(XY)= 10.56,E(X)= 4.22,and E(Y)= 5.34,then Cov(X,Y)= 1.0.

---

Definitions:

Internal Validity

The extent to which the results of a study can be attributed to the variables under investigation rather than to other extraneous factors.

Quantitative Designs

Research strategies that focus on numerical data, statistical analysis, and the objective quantification of variables.

Qualitative Designs

Are research strategies focusing on descriptive, non-numerical data to understand concepts, thoughts, or experiences.

Generalizable

The extent to which findings or conclusions from a study can be applied to larger populations or different contexts outside of the original study setting.