Statistical Methods for Psychology

at substantially higher rates than females. However, when we break the data down by de- partments, we see that in three of those ...

relationship between gender and admissions than did the other five departments, which were largely homogeneous in that respect. ...

because the treatments (aspirin versus no aspirin) were applied and then future outcome was determined. This will become importa ...

that mean that the death sentence study found a larger effect size? Well, it depends—it cer- tainly did with respect to risk dif ...

The odds ratio has at least two things in its favor. In the first place, it can be calculated in sit- uations in which a true ri ...

those who reported one category of childhood abuse have an odds ratio of 0.163/0.106 5 1.54. Thus the odds of being abused as an ...

The two entries on the right for Department B are 353 3 8/585 5 4.827 and 207 3 17/585 5 6.015. The odds for the remaining rows ...

For the Aspirin data in Table 6.10, 5 25.014 That does not appear to be a very large correlation, but on the other hand we are s ...

however. The majority of the adolescents in our sample exhibit no behavior problems, and both judges are (correctly) biased towa ...

Exercises 167 6.13 Writing Up the Results We will take as our example Jankowski’s study of sexual abuse. If you were writing up ...

168 Chapter 6 Categorical Data and Chi-Square 6.2 From the point of view of designing a valid experiment (as opposed to the arit ...

Exercises 169 following data, all children who were ever classified as exhibiting behavior associated with ADD have been combine ...

170 Chapter 6 Categorical Data and Chi-Square 6.15 Darley and Latané (1968) asked subjects to participate in a discussion carrie ...

Exercises 171 6.21 Suppose we asked a group participants whether they liked Monday Night Football, made them watch a game, and t ...

172 Chapter 6 Categorical Data and Chi-Square Chi-Square Tests Asymp. Sig. Value df (2-sided) Pearson Chi-Square 37.229a 2 .000 ...

Exercises 173 6.28 Compute the odds in favor of seeking assistance for each of the groups in Exercise 6.15. Interpret the result ...

174 Chapter 6 Categorical Data and Chi-Square information on the gender of the students and the college (within the university) ...

Exercises 175 agreed with “Sex is fun for me and my partner” on a four-point scale ranging from “never or occasionally” to “almo ...

176 Chapter 6 Categorical Data and Chi-Square Death Penalty Seriousness Race Victim Yes No 1 White 2 60 Black 1 181 2 White 2 15 ...

6.43 The State of Maine collected data on seat belt use and highway fatalities in 1996. (Full data are available at http://maine ...