Which type of hypothesis represents a statement of equality?

Dr. Roper and Dr. Hart used the Social Skills rating scale to rate 10 children’s aggression in Headstart Class #1 in December. Cohen’s kappa was calculated for the observations and was .90. Based on this information, we can say that

The operational definition refers to

If a study is reliable, will it also be valid? Explain. – Yes – No – Perhaps

1-6. Match the scale/level of measurement with the example.  

You give a copy of your marital satisfaction measure to people who are contemplating divorce and people who are happily married. People who are contemplating divorce score low on the measure, and people who are happily married score high on marital satisfaction. Your measure has good

This measurement is

Dr. Draper investigated the relationship between the number of class periods students attended in his research methods course and the score on the final exam. He found that students who attended more classes received better grades than students who attended fewer classes. The independent variable was

Below is a simulated time series, along with its empirical ACF and PACF plots.   Which is the most likely scenario?

Time series, cross-correlation, and ACF plots for series A and series B are below.  Both series exhibit possible periodicity, with period of about six months.