Discussion Forum: Stats

Why are standard z-values so important? Why would it be desirable to compare data sets with different units? Explain how one can compare the differences in quantities by simply comparing z-value. Consider the formula used and the units involved.

Initial posts should thoroughly address all portions of the question and provide examples to support your statements. Reply posts should address whether or not you agree with the initial poster’s assessment, and why. Replies to peers should be insightful; they should expand on a classmate’s ideas, advance the dialogue, and promote a collaborative learning community.