Statistical Methods for Psychology

of California – Irvine; Mathew Spackman, Brigham Young University; Mary Uley, Linden- wood University; and Christy Witt, Louisia ...

About the Author Professor Howell is Emeritus Professor at the University of Vermont. After gaining his Ph.D. from Tulane Univer ...

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CHAPTER 1 Basic Concepts Objectives To examine the kinds of problems presented in this book and the issues involved in selecting ...

STRESS IS SOMETHINGthat we are all forced to deal with throughout life. It arises in our daily interactions with those around us ...

Assuming that the sample is truly random, we not only can estimate certain character- istics of the population, but also can hav ...

Having dealt with the selection of subjects and their assignment to treatment groups, it is time to consider how we treat each g ...

more or less continuous scale of anxiety, we would be dealing with measurement data, and the data would consist of scores for ea ...

1.3 Measurement Scales The topic of measurement scales is one that some writers think is crucial and others think is irrelevant. ...

implied about the differences between points on the scale. We do not assume, for example, that the difference between 10 and 15 ...

scale. To a person sitting in a room at 62 8 F, a jump to 64 8 F would be distinctly noticeable (and welcome). The same cannot b ...

From the preceding discussion, the apparent conclusion—and the one accepted in this book—is that the underlying measurement scal ...

10 Relationbetweensamples Relationships Number of predictors One Independent WilcoxonNumber of indep. var.RepeatedmeasuresANOVA ...

Key Terms 11 calculate means and standard deviations, and so on. These techniques will be discussed in Chapter 2. Following an e ...

12 Chapter 1 Basic Concepts Exercises 1.1 Under what conditions would the entire student body of your college or university be c ...

Exercises 13 d. How might Beth go about “random sampling”? How would she go about “random as- signment”? e. If random assignment ...

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CHAPTER 2 Describing and Exploring Data CHAPTER 2 Describing and Exploring Data Objectives To show how data can be reduced to a ...

A COLLECTION OF RAW DATA, taken by itself, is no more exciting or informative than junk mail before Election Day. Whether you ha ...

in which data can be represented graphically. Some of these methods are frequency distri- butions, histograms, and stem-and-leaf ...