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ARCH models represent the residual series as a moving average process. 

Time series, cross-correlation, and ACF plots for series A and series B are below.  Series A leads series B. 

Consider the following time series plot: Does this time series appear to be a candidate for a hidden Markov model?  Explain. 

Time series, cross-correlation, and ACF plots for series A and series B are below.  The ACF plots indicate both series should be modeled as MA processes.

Based on the plots of the inverse roots of the AR and MA polynomials (or, the roots of the auxiliary polynomials), is the corresponding ARMA stationary and causal?  Is it invertible?

According to your textbook, what conflict style is characterized by couples who are highly assertive but have a great deal of concern for their partners as well?

Which of the following was one of the facts about theories discussed in lessons?

According to Chapter 7 of the textbook, when speaking of the traditional view, society required that men be _______ and women be ________.

The communication patterns in a family would be considered a first order process.

Short Answer Read each question carefully and write your answer on the Written Response Sheets provided with your exam. Be sure to write the number of the question with your answer, and to answer all parts of the question. Each question is worth 10 points; this section is worth 30 points total.