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

A grouped frequency distribution has a mean of 100 and a standard deviation of 20. The class limits for one class are 50 up to 60. What are the standard normal z-statistics for the class limits?

Six people have declared their intentions to run for a trustee seat in the next local election. A political 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 expected frequency for each candidate?

Which of the following assumptions is necessary to apply a goodness-of-fit test?

The chi-square distribution becomes more symmetrical as

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. Based on the normal distribution, what is the probability that an observation would be in this class?

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. At the 1% level of significance, what is your decision regarding the null hypothesis?

To determine if a set of ungrouped, raw data is normally distributed, the cumulative relative frequency distribution of the raw data is compared to a

A question has these possible choices-excellent, very good, good, fair and unsatisfactory. How many degrees of freedom are there using the goodness-of-fit test to the sample results?

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. What are the standard normal z-statistic class limits for the "400 up to 600" class?

A survey of the opinions of property owners about a street widening project was taken to determine whether the property owners' opinions were related to their property's distance (front-footage) from the street. A randomly selected sample of 100 property owners was contacted and the results are shown below. What is the alternative hypothesis? ________________________________

What is the critical value at the 0.05 level of significance for a goodness-of-fit test if there are six categories?

Why are the goodness-of-fit hypothesis tests comparing observed data to a normal distribution important in the field of statistics? Provide an example.

The Anderson-Darling tests a null hypothesis that the sample data are _____________ distributed.

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 alternative hypothesis?

To determine if a set of ungrouped, raw data is normally distributed, the null hypothesis is

A survey of the opinions of property owners about a street widening project was taken to determine whether the property owners' opinions were related to their property's distance (front-footage) from the street. A randomly selected sample of 100 property owners was contacted and the results are shown below. What are the degrees of freedom for testing the null hypothesis? __________

The chi-square test statistic used in a goodness-of-fit test has k-1 degrees of freedom.

The chi-square distribution is

A grouped frequency distribution has a mean of 100 and a standard deviation of 20. The class limits for one class are 50 up to 60. Based on the normal distribution, what is the probability that an observation would be in this class?

If an employee wanted to investigate the relationship between performance rating and gender, what type of analysis should be used?