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. We can estimate the Ljung-Box statistic in Eviews by creating a correlogram for the series rlsp500. In the
PARTICLE SIZE DISTRIBUTIONS (PSD) There are several mathematical distributions used for PSD’s, the 2 main distributions are Gaussian and Log-Normal. The Gaussian distribution is less common, and due to the fact that it is plotted with a regular scale it is asymmetrical. The Log-Normal distribution is plotted on a log x axis, hence this makes it more symmetrical and easier to read. Another distribution is a multimodal distribution, which has more than 1 maximum. 5 A study was done that compares the
Probability Distribution Functions I summarize here some of the more common distributions utilized in probability and statistics. Some are more consequential than others, and not all of them are utilized in all fields.For each distribution, I give the denomination of the distribution along with one or two parameters and betoken whether it is a discrete distribution or a perpetual one. Then I describe an example interpretation for a desultory variable X having that distribution. Each discrete
The Gaussian distribution—a function that tells the probability that any real observation will fall between any two real limits or real numbers, as the curve approaches zero on either side. It is a very commonly occurring continuous probability distribution. In theory, Gaussian distributions are extremely important in statistics and are often used in the natural and social sciences for real-valued random variables whose distributions are not known. Gaussian distributions are also sometimes referred
Display the Barron’s guide discusses the different types of graphs, measures of center and spread, including outliers, modes, and shape. Summarizing Distributions mentions different ways of measuring the center, spread, and position, including z-scores, percentile rankings, and the Innerquartile Range, and its role in finding outliers. Comparing Distributions discusses the different types of graphical displays and the situations in which each type is most useful or appropriate. The section on Exploring
The Impact of Entrepreneurial Characteristics on SME Performance The Small and Medium Enterprises (SME) plays a very important role in the success & development of any economy. According to the SME policy 2007, “SME sector is the backbone of Pakistan’s Economy”. Globally, this sector is the major growing force behind the fastest growing economy of China, in term of contribution to the national GDP, scale of assets, diversification of products and the creation of employment. Similarly, the role
conclusions (Portney & Watkins, 2009). Frequency distribution is a method used in descriptive statistics to arrange the values of one or multiple variables in a sample, so it will summarize the distribution of values in a sample. Frequency distribution is the most basic and frequently used method in statistics because it creates organized tables of data which can be used later to calculate averages or measure variability. The organized data frequency distribution provides continuous data that is easier to
probit plots and by computing univariate and multivariate measures of skewness and kurtosis. Histograms, stem-and-leaf and probit plots indicate the symmetric distribution of variables or sets of variables. Tabachnick and Fidell (1996) suggest the value of skewness and kurtosis is equal to zero if the distribution of a variable is normal. Chou and Bentler (1995) emphases the absolute values of univariate skewness indices greater than 3 can be described as extremely skewed. Meanwhile, a threshold
Gulf Condominium Real Estate Analysis After analyzing a sample of 40 gulf view condominiums and 18 no gulf view condominiums it becomes evident that variations exist between the two different types of properties. When reviewing the data it becomes clear that luxurious gulf view condominiums can fetch larger selling prices and are listed on the market for fewer days than no gulf view condominiums. No gulf view condominiums fetch lower selling prices and sit on the market for longer periods of time
Shaken Baby Syndrome (SBS) is an incident that will forever change and affect the victimized child dramatically. Most normal children are able to develop normally without deficits in areas of occupations or performance skills, but a child with SBS may never be the same. The lasting effects of Shaken Baby Syndrome impact a child’s life in areas of occupations such as social participation, play, and education. Characteristics of Shaken Baby Syndrome Etiology Shaken Baby Syndrome is, “a condition of
The global recession that was experienced in 2008 to 2009 revealed some mysteries of unethical behaviors from Wall Street executives and their financial assistors. A research conducted to determine the cause of cheating in business operations was attributed to a lifestyle that was adapted in business classes. The article articulates that 86% of business students cheat in their course work compared to 77% of non-business courses. The findings were of great concern to the dean at Rocky University as
same class. One student is normal in abilities and the other has a learning disability. The second student suffers from dyslexia. The students in the class are expected to listen to the teacher and to take notes. The normal student would be able to read and write efficiently. However, the dyslexic student would have a hard time not only reading the board presentations but in taking notes. This would cause the dyslexic student to not be able to learn as much as the normal student. This scenario does
Outliers: The Story of Success Malcolm Gladwell’s writing style in the book “Outliers: The Story of Success” was based on a series of case studies. He starts out the book with the Roseto example to introduce the thesis of the book, which is that successes and failures can be clarified in unexpected ways. The organization could not have been any more improved. Each study led into the other, and related to each other so he could reflect on past studies in his book when explaining the present study
Cognitive intelligence (IQ) and Emotional Intelligence (EQ) are both two differentiating types of intelligence that can both be used to enhance one’s overall intelligence level. IQ, or intelligence quotient, is a number derived from a standardized intelligence test and EQ, or emotional quotient, is a measure of a person 's level of emotional intelligence (Cherry, 2015). Originally, IQ tests were calculated and found by dividing one’s mental age by his or her chronological age and then multiplying
Meteorological drought is referred as a precipitation deficiency, in comparison to normal or base line condition. We use Standardized Precipitation index (SPI-n, where n = 3, 6, 9 and 12 months accumulation period) as an index of meteorological drought. SPI represents a statistical z-score or the number of standard deviations (following a probability distribution, usually Gamma and back transformed to standard normal distribution) above or below that an event is from the mean (McKee et al. 1993; Sims et
Blending is basically when a person combines both different personas and roles. Essentially, blending can occur between a person’s normal state and a character, both imaginary or situational. This helped contribute to my reception of the blended Sarah/Fiona persona that was exhibited on stage. By blending normal Sarah with the character Fiona, it helped me to understand the character and how she fit into the context of the play as well as understand her intentions in the
Statistical Report Introduction Anthropometric measurements are mainly concerned with assessing a person’s body composition in order to determine their nutrition status. In terms of composition, it assesses the density, fat, subcutaneous fat and the relative muscle mass. Such components provide valuable insights on an individual’s nutrition status, which is influenced by various factors including the quantity and quality of food intake, and a person’s physical health. As such, two extreme variations
these doctors is very respected in their fields and is experts on children in school. This article talks about the development of programs in schools to help those who are talented, gifted and rise above the rest. Individuals that place above the normal curve are the talented ones. The student’s mental ability is counted as “g” or intellectual factor (Arancibia, 2008, p. 54). This intellectual factor accounts for a lot of different elements. Gifted students have a problem with Low EQ,
independent. H1: Attribute A and Attribute B are not independent. α: Level of significance = 0.05 Test statistics : χ^2= (∑▒∑ (O_ij- E_ij )^2)/E_ij χ_cal^2= (∑▒∑ (Observed Percentage-Expected Percentage)^2)/(Expected Percentage) χ_cal^2 distribution with (m-1)(n-1) degrees of freedom, where, m : number of rows. n : number of columns. Critical region : { χ_cal^2 ≥ 〖 χ〗_((m-1)(n-1),α)^2} Hence critical region is given as follows: χ_((m-1)(n-1),α)^2 α Decision Rule:
Eligibility criteria The eligibility criteria can be divided into inclusion and exclusion criteria. Inclusion criteria Participants should be within the age of 18-55 years at the commencement of the trial. Have BPE sextant codes less than 3 (i.e. code 0, 1, or 2) in permanent teeth (The British Society of Periodontology, 2011) (refer Appendix 1). Have at least one permanent tooth with a NCCL. Have a minimum of 20 natural teeth (these can include crowns and bridges on permanent teeth).