I often times get questions from students about different Stats textbooks. One of the books that is brought up frequently is The Basic Practice of Statistics, which is your classic Statistics 101 textbook. Most of those books are more than adequate for learning...

Statistics is a field that has a lot draw and attention. People seem to be attracted by Statistics and its ethos, but usually people do not understand the real ethos of Statistics, and they tend to pay attention to certain elements that are perhaps less relevant than...

Test preparation is always a hot topic, especially because students are usually clueless about it. And this is because there is this dubious premise that if you attend to your Stats lecture and pay attention to class, you won’t need anything. But that is far...

Which of the usual regression assumptions is shown to be violated in the graph below? a.) linearity of errors b.) Constant error variance c.) normality of errors d.) independence of errors Solution: (B) Constant error of variance GO TO NEXT PROBLEM...

The owner of an intracity moving company typically has his most experienced manager predict the total number of labor hours that will be required to complete an upcoming move. This approach has proved useful in the past, but he would like to be able to develop a more...

Find the (a) explained variation, (b) unexplained variation, (c) total variation, (d) coefficient of determination, and (e) standard error of estimate se. In each case, there is a significance linear correlation so that it is reasonable to use the regression equation...