For each research situation summarized below, identify the level of measurement of all variables. Also, decide which

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For each research situation summarized below, identify the level of measurement of all variables. Also, decide which statistical applications are used: descriptive statistics (single variable), descriptive statistics (two or more variables), or inferential statistics. Remember that it is quite common for a given situation to require more than one type of application.

a. The administration of your university is proposing a change in parking policy. You select a random sample of students and ask each one if he or she favors or opposes the change.

b. You ask everyone in your social research class to tell you the highest grade he or she ever received in a math course and his or her grade on a recent statistics test. You then compare the two sets of scores to see if there is any relationship.

c. Your aunt is running for mayor and hires you

(for a huge fee, incidentally) to question a sample of voters about their concerns in local politics. Specifi cally, she wants a profi le of the voters that will tell her what percentage belong to each political party, what percentage are male or female, and what percentage favor or oppose the widening of the main street in town.

d. Several years ago, a state reinstituted the death penalty for fi rst-degree homicide. Supporters of capital punishment argued that this change would reduce the homicide rate. To investigate this claim, a researcher has gathered information on the number of homicides in the state for the two-year periods before and after the change.

e. A local automobile dealer is concerned about customer satisfaction. He wants to mail a survey form to all customers who purchased cars during the past year and ask them if they are satisfi ed, very satisfi ed, or not satisfi ed with their purchases.

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