Exam 14: Interpreting Data

When discussing regression analysis, the ___________ is the difference between the total variation and the unexplained variation.

The formula "Y is a function of X" means:

When we use regression analysis, we are finding the regression equation that represents the geometrical line that comes closest to the distribution of points. This can be illustrated in which of the following?

A friend of yours assigned a code of 1 to "male" and a code of 2 to "female" on the variable gender. Your friend asked the computer to compute the average score on gender. The computer printout contained the following information: mean = 1.38, standard deviation = .432, median = 1.4, and mode = 1.0.  What is your friend's problem with the computer information?

Professor White asked his students to put the number of hours each studied for the final exam on a piece of paper and turn that paper in with the exam. The pieces of paper indicate that students studied 10, 3, 4, 25, 1, 4, 4, 12, 6, 8, and 10 hours. What is the modal number of hours studied?

Which of the following is a test of statistical significance?

Crime rates are:

Which of the following would represent a distribution of those arrested on a holiday weekend?

Values of the dependent variable are contingent on values of the independent variable in

In a distribution of sentence lengths in months like the following-6, 12, 10, 18, 240, 360-which statistic would a researcher not want to report?

The sum of values for all observations, divided by the number of observations is the

Which of the following measures of central tendency are the easiest to calculate?

Discuss in detail the various levels of measurement. Are there certain circumstances when some levels of measurement are more appropriate than others? Be sure to defend your answer.

Ordinal variables use which of the following as the appropriate measure of association?

With respect to standard deviation, which of the following statements is correct?

Because extremes in a distribution (a very large or very small number) can impact the mean, it is usually important to examine measures of dispersion about the mean.

Which of the following would be an inappropriate manner to report findings on the variable gender?

Which of the following is not one of the assumptions of making inferences about a larger population when using univariate tests?

In #53 above, what is the range of the number of hours studied?

Empirical research is first a logical rather than a mathematical operation.