A metropolitan law enforcement agency classifies crimes committed within its jurisdiction as either “violent” or “nonviolent.” An investigation has been ordered to find out whether the type of crime (violent or nonviolent) depends on the age of the person who committed it. A sample of 100 crimes was selected at random from the police files. […]
Chi-square tests are nonparametric tests that examine nominal categories as opposed to numerical values. Consider a situation in which you may want to transform numerical scores into categories. Provide a specific example of a situation in which categories are more informative than the actual values.
A metropolitan law enforcement agency classifies crimes committed within its jurisdiction as either “violent” or “nonviolent.” An investigation has been ordered to find out whether the type of crime (violent or nonviolent) depends on the age of the person who committed it. A sample of 100 crimes was selected at random from the police files. […]
In the process of revamping its curriculum, the sociology department at a small college surveyed its 200 sociology majors to see whether they preferred to have fewer required courses, keep the same number of required courses, or add more required courses for the sociology major. The results, grouped according to the respondents’ year in school, […]
If the school cafeteria serves meat loaf, there is a 60% chance that they will serve peas. If they do not serve meat loaf., there is a 40% chance that they will serve peas anyway. The students know that meat loaf will be served exactly once during the 5-day week, but they do not know […]
You learned about multiple regression analysis where you used multiple predictor variables to examine their relationship to a single outcome variable that is measured on a continuous, quantitative scale. However, what if you want to examine how multiple predictor variables relate to an outcome variable that is measured on a categorical scale? To do this, […]
In this final assignment, you will develop a Microsoft PowerPoint presentation where you will propose a hypothesis that would require the use of one of the advanced statistical techniques that you have covered. First, you will be asked to identify a research paper on a topic of interest that uses multiple regression in the analysis. […]
The final assignment involves the data set cars.dat that is found in the R:Stat344sas folder on the ASCL server. (Note that it is not in the Rawlings sub-folder.)The data are concerned with a number of automobiles. The columns represent the following variables:Fuel consumption (L/100 km)Engine displacement (cm3)HorsepowerVehicle weight (kg)Type of transmissionYour task is to describe […]
You have two sample groups. In group one, there are nine successes out of 60. In group two, there are 13 successes out of 50. Calculate:
Discussing Appropriate Analyses Part of the emphasis of this course has been to equip you with the necessary knowledge for identifying the appropriate application of advanced statistical analysis to different research situations. In this final discussion, you will be providing two different research situations and their associated hypotheses. You will then describe the best analytic […]
