Exam 13: Nonparametric Statistics

Six second grade students tried tossing a ball into a basket ten times each.Their teacher then suggested a different way of tossing the ball, and the six students tried again.The Number of successful tosses, before and after the teacher's added instruction, are shown Below. Ignoring the differences of 0, the positive rank sum is:

A researcher is interested in investigating two dependent non-normally distributed variables.Which of the following should be used for this application?

What type of test takes the magnitude of the data into consideration by using ranks?

Given that a variable is normally distributed, researchers will need more data to determine the same information using parametric methods than they would for nonparametric methods.In other words, parametric methods are not as efficient as nonparametric methods.

A researcher collects data on the distance between college students' high schools and their colleges.He believes that the median distance is 200 miles.A random sample of 15 students yields the following data: At = .05, should the researcher's hypothesis be accepted or rejected? You may use the following abbreviated table of critical values (two tailed, = .05) taken from Table J:

If a researcher is using the sign test and has 12 positive signs and 7 negative signs, then the test value is:

What is the term that refers to any statistical test, such as the z-, t-, or F-test?

What is the critical value for the sign test if and there are 14 samples?

Two students were asked to rate six different television shows on a scale from 0 to 10.The data are shown in the following table: What are the television show rankings for student 1 (to be used to calculate the Spearman Rank Correlation Coefficient)?

If data is normally distributed, then the Wilcoxon signed-rank test is more powerful than the sign test.

A researcher tests three different brands of 2% milk to see how many grams of fat are in each 8 ounce glass.The results are shown below. What is the sum of the ranks of Brand B?

Since the Wilcoxon rank sum test uses only the ranks of the data values and not the actual magnitudes of the data values, it is never as powerful as the corresponding t-test.

A researcher tests three different brands of 2% milk to see how many grams of fat are in each 8-ounce glass.The results are shown below. What is the rank of the glass marked "Bessie"?

For a random sample of 60, if 45 values are below the median and the rest are above.Find the value of the test statistic.

Which of the following is not an advantage of nonparametric methods over parametric methods?

For a random sample of 40, if 30 values are below the median and 10 are above, compute the test statistic.test.

Two students were asked to rate six different television shows on a scale from 0 to 10.The data are shown in the following table: What is the sum of squares of the ranking differences (to be used to calculate the Spearman Rank Correlation Coefficient)?

How many runs are in the following sequence?

In the Wilcoxon tests, if the _______________ is true, the values in each sample should be of approximately the same rank. ________________________________________

Six second grade students tried tossing a ball into a basket ten times each.Their teacher then suggested a different way of tossing the ball, and the six students tried again.The Number of successful tosses, before and after the teacher's added instruction, are shown Below. What are the absolute values of the differences?