Exam 15: Nonparametric Methods: Goodness-Of-Fit Tests

A survey of property owners' opinions about a street-widening project was taken to determine if owners' opinions were related to the distance between their home and the street. A randomly selected sample of 100 property owners was contacted and the results are shown next. What is the expected frequency for people who are in favor of the project and have less than 45 feet of property foot-frontage?

A distributor of personal computers has five locations in a city. In the year's first quarter, the sales in units were: For a goodness-of-fit test that sales were the same for all locations, what is the critical value at the 0.01 level of risk?

To test if an observed frequency distribution with five classes is normally distributed, we need to ___________.

The Anderson-Darling test for normality compares a cumulative normal distribution to a cumulative distribution of the ___________ data.

A 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?

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

The chi-square distribution is _____________.

The computed chi-square value is positive because the difference between the observed and expected frequencies is _____________.