Correlation Between Correlation And Serial Correlation Essay

Correlation Between Correlation And Serial Correlation Essay

Length: 1025 words (2.9 double-spaced pages)

Rating: Better Essays

Open Document

Essay Preview

1. Visually looking at the four in one residual plot for histogram from +1 to +3, I can see that it has problem not center around zero. Normal probability plot dose not look normally distributed it is not tightly grouped around zero. From around 1.5 to 3.0 not normally distributed.
2. Versus order look serial correlation but not sure, there is a long run of negative from 5 to 10, 10 to 17, and long run of positive from 30 to 35. On top on time 30 seem odd. But one cannot tell by just looking at it visually. One will be running the test to see if there is serial correlation or not by testing Durbin Watson and LM serial correlation. The Durbin Watson practice warning is around 2.0% my Statistic for Durbin-Watson is 1.45 I can reject the null of no serial correlation and accept the alternative of serial correlation.
The LM test will conclude for serial correlation or no serial correlation. I ran the residual lag in the Right hand side with the other 2 variables. LM test will test for first order serial correlation.
I will be looking at unadjusted R-sq which is 7.44% in decimal that is 0.07% and from the total analysis of variance I have 34 observations. Therefore, my calculate test statistic is 34-1*.0744 = 2.4552 for high distribution my alpha level in 1 degree of freedom. Table value for 3.8%, therefore; 2.4% is less than 3.8% we reject the null of serial correlation in the favor of alternative no serial correlation.
Even though Durbin Watson show there is serial correlation I prefer LM test of no serial correlation. There are no consequences or any fixes; since I have used the dummies for my test I have seen changes in my regression. Therefore, I will move on to next test.

3. versus fit looks heteroscedasticity that w...

... middle of paper ...

...ation however I also ran LM test to get the better result and have rejected the serial correlation and accept the no serial correlation. My consequence without the dummies gave me wrong results. The fixes are adding my dummies for seasonality or else I would have to drop all variables, need to get better variables and start all over again.

IV. Conclusion
In conclusion, it was very hard to find a right hand side variables but using the dummies for seasonality my LM test and KB-test came out perfectly. As a manager I would have more idea now and would learn more future if I do this work as manager. I would definitely need more skills for regression. I would not feel so comfortable doing my regression but need more practice. The warning sign I will be looking for are my wrong model. I will ask myself before even running regression if my sign are right or not.

Need Writing Help?

Get feedback on grammar, clarity, concision and logic instantly.

Check your paper »

The Ljung Box Test Is A Test For Serial Correlation Essay

- The Ljung-Box test is a test for serial correlation that tests if the autocorrelation coefficients for a given number of lags are jointly not significantly different from zero. The statistic for this test is where T is the sample size, m is the number of lags and is the estimated autocorrelation coefficient. The null hypothesis for this test is that the coefficients are all jointly zero and has a distribution. The alternative hypothesis is that at least one of the coefficients is not equal to zero and implies the presence of serial correlation....   [tags: Normal distribution, Variance, Regression analysis]

Better Essays
1720 words (4.9 pages)

Essay on The Biology of a Serial Killer

- The year is 1967 and Theodore Bundy, an average American college student has fallen in love with Stephanie, a dark haired co-ed of the same state university. He convinces her to go on a few dates, but she quickly loses interest, later citing his lack of ambition. The rejection on his heels, Bundy shifts gears and spends the next six years of his life transforming himself into the law student of her dreams. When they meet again Bundy holds the upper hand and Stephanie falls in love. A short time after the small wedding ceremony Bundy abandons Stephanie during a ski vacation and she never hears from him again.(2) In the context of this short historical blip from the life of America's mo...   [tags: Chaos Theory and the Serial Killer]

Better Essays
2690 words (7.7 pages)

Psychology Behind Serial Killers Essay

- It’s 1975 and a pretty young woman with long dark hair parted in the middle is working at a convenience store. An attractive man in his mid-thirties walks in, about six feet tall and with wavy brown hair. He gives her a smile and strikes up a conversation, where he is charming and charismatic. Little does she know that she’s in deep trouble. His name is Ted Bundy, one of the worst serial killers of the twentieth century, and he has a thing for attractive young women with long dark hair parted down the middle (Philbin 34)....   [tags: young woman, psychiatric illness, cruel]

Better Essays
932 words (2.7 pages)

The Hitman Study: The Correlation of Violent Video Games and Aggression Essay

- In 2005, the American Psychological Association suggested that the correlation between violent video games and aggression is stronger than the correlation with television. Some notable scholars have question this correlation, and wondered if it was infact true. This debate came up again after the Virginia Tech Shootings, when Philip McGraw, commonly known as Dr. Phil, and Jack Thompson blamed it on the violent video games. In 2007, the Virginia Tech Review Panel discovered that Seung-Hui Cho, the shooter, did not play video games at all....   [tags: theories, learning, social, exposure]

Better Essays
571 words (1.6 pages)

The Mind Of A Killer Essay

- The Mind of a Killer According to the Federal Bureau of Investigation, a “serial killer” is an individual who murders two or more people in a span of a month. Ted Bundy, an infamous serial killer once stated, “You feel the last bit of breath leaving their body. You’re looking into their eyes. A person in that situation is God!” illustrating the empowerment the killer felt when hurting their victim. Sigmund Freud, the founding father of psychoanalysis, a perspective looking at the unconscious mind in which early childhood experiences influence current behavior especially on the focus of sexual relationships....   [tags: Serial killer, Ted Bundy, Jeffrey Dahmer]

Better Essays
1823 words (5.2 pages)

Essay about The Biological, Social, and Artistic Construction of a Serial Killer

- Making a Monster: The Biological, Social, and Artistic Construction of a Serial Killer From Psychosis to Sondheim Jack the Ripper, John Wayne Gacy, Ted Bundy, the Boston Strangler, Jeffrey Dahmer. Despite the years of history that separate these names, they remain indelibly preserved within our collective societal consciousness because of the massively violent and calculated nature of their crimes. Serial killers, both men and women, represent social monstrosities of the most terrifying variety....   [tags: Biology Essays Research Papers]

Better Essays
2451 words (7 pages)

Serial Killer And Serial Killers Essay

- Serial killers have been on the rise in the United States for the last century. With this rise of cold-blooded killers, there also came a rise in individuals who are intrigued, or even obsessed, with these people who can kill with no remorse. Many Americans want to know what makes a serial killer tick. To find out, we may turn to television shows and movies such as Dexter or Silence of the Lambs. But the problem with conducting such limited research is that “nothing is exactly cut-and-dry with serial killers” (Bryant and Clark)....   [tags: Serial killer, Psychopathy]

Better Essays
1237 words (3.5 pages)

Serial Killer : Serial Killers Essay

- Serial murder as defined by the FBI is, “[t]he unlawful killing of two or more victims by the same offender(s), in separate events" (Morton Robert J. Ed, & Hilts., Ed, 2005, p. 9). Numerous people disagree with the definition, this researcher included, since it lacks the cool- down period after they murder, which various people feel stands necessary for serial killer status. Serial killers remain a rare phenomenon. The FBI states, serial murder accounts for less than one percent of killings per year (Morton Robert J....   [tags: Crime, Murder, Serial killer]

Better Essays
2452 words (7 pages)

Serial Killers : A Serial Killer Essay

- Serial Killers have been present all over the world for a very long time. They kill innocent people every day for nor reason. They commit murder after murder and still continue the process. In some cases determining if someone will be a serial killer is much harder than other cases. In the case of Andrew Cunanan who was a serial killer, had killed over four people in just one year. There was no evidence in his childhood that would predict he would be become a serial killer so it was very surprising to see how a little boy could transform into a murderer....   [tags: Murder, Serial killer, Andrew Cunanan]

Better Essays
1070 words (3.1 pages)

Serial Killers And The Serial Killer Essay

- According to Culhane there are three or more victims, three or more incidents and an emotional “cooling off” period in between murders that are considered the three main characteristics in defining a serial murderer. Being a serial killer is hard work in their minds, but yet again it’s very easy to them just depending on if they are organized with their killings or unorganized with their killings, along with having a difference in their behaviors of which is which. Is it a serial murder or a serial killer....   [tags: Murder, Serial killer, Ted Bundy, Jeffrey Dahmer]

Better Essays
1424 words (4.1 pages)