Exam 17: Nonparametric Methods: Goodness-Of-Fit Tests

The test statistic for a goodness-of-fit test for unequal expected frequencies is a __________ statistic.

Six people have declared their intentions to run for a seat on the school board in the next local election. A poll is conducted during the campaign among 1,020 randomly sampled voters to determine if there is any clear preference among the voters. The responses are shown below. What is the computed chi-square statistic?

We are interested in knowing if the following frequency distribution is normally distributed. The mean and standard deviation of the data is 600 and 160. To test the hypothesis that the frequency distribution is normally distributed, we estimate two population parameters. What are they?

For any goodness-of-fit test, the null hypothesis is that there is ____ difference between the expected and observed distributions.

If the computed value of a chi-square statistic is greater than the critical value, what is the decision regarding the null hypothesis? _________

Six people have declared their intentions to run for a seat on the school board in the next local election. A poll is conducted during the campaign among 1,020 randomly sampled voters to determine if there is any clear preference among the voters. The responses are shown below. What is the critical value at the 1% level of significance?

What is the decision regarding the differences between the observed and expected frequencies if the critical value of chi-square is 9.488 and the computed value is 6.079?

When testing a goodness-of-fit null hypothesis, and there are extremely large differences between observed and expected frequencies, what decision should be made? ____________

A recent study of the relationship between social activity and education showed the following results. The degrees of freedom for the analysis is:

For contingency table test of independence, the formula to compute the degrees of freedom is ___________________________________

A grouped frequency distribution has a mean of 200 and a standard deviation of 20. The class limits for one class are 220 up to 240. What are the standard normal z-statistics for the class limits?

Six people have declared their intentions to run for a seat on the school board in the next local election. A poll is conducted during the campaign among 1,020 randomly sampled voters to determine if there is any clear preference among the voters. The responses are shown below. How many degrees of freedom are there?

Which of the following are correct statements regarding the goodness-of-fit test?

In a contingency table, the decision to reject the null hypothesis is based on a __________ test statistic.

A recent study of the relationship between social activity and education showed the following results. What is the value of the test statistic?

In a contingency table, multiplying the row total by the column total and dividing by the ___________ computes the expected frequency for a cell.

What does a significantly large chi-square statistic infer about the differences between the observed and expected frequencies in a goodness-of-fit test?

Recently, students in a marketing research class were interested in the driving behavior of students. Specifically, the marketing students were interested if exceeding the speed limit was related to social activity. They collected the following responses from 100 randomly selected students: Based on the analysis, what can be concluded?

In a contingency table, the decision to reject the null hypothesis is based on a __________ test statistic.

Which of the following are correct statements regarding the chi-square distribution?