Statistical inference

In all businesses and organisations, Databases are used to store all the core activities/information and often when there a major changes or restructure of the business the first process of many businesses is to change their databases to realign with their goal which makes them a valuable asset to any organisation. (Margulies, Pfleeger, Pfleeger 2015). Databases stores and maintain data at one central location so users can easily access it whenever needed. Through the use of Queries, databases…

reasoning, statistical inference, generalization, cognition of randomized sampling and more. These findings are of great significance to the field of child and developmental psychology, because they disprove Piaget’s precausal theory, and establish that at an early age infants have the ability to think like a mini-scientist and use statistical…

The author’s inference of the purported decline in deer population as a result of melting of sea ice due to global warming which has disrupted the age old migration pattern of the Arctic deer is based on weak assumptions and unconvincing logics. The author’s lack of in-depth analysis and missing evidences and arguments have left holes in the reasoning of the argument. The argument is based on the main pre-supposition that there exists a strong connection between global warming and diminishing…

hypothesis test to make inferences about population when sample data is available. P value in inferential statistics is the probability of null hypothesis being true, if the p value is less than level of significance than we reject null hypothesis and if p value is more than level of significance we do not reject null hypothesis. Hypothesis development and testing A statement about population which is to be tested is referred as Statistical hypothesis. A test of hypothesis is a statistical…

Threads to validity are specific reasons why a person can be partly or completely wrong when making an inference. There are several threads to validity that will raise questions about an experimenter’s ability to conclude that the intervention affects an outcome and not some other factor. Internal validity regards to the internal logic and consistency of the research. If research is seen as an argument then internal validity is about the logic and consistency of this argument. It is most…

has faced challenges over the years. This article is founded on factual evidence as it presents the aspects surrounding the American dream using well-founded statistical data. The article for instance points out the fact that the society has developed to have a large gap between the rich and the poor and this is articulated with the statistical fact that only a mere 400 individuals at the top of the wealth hierarchy have more wealth than the bottom 180 million members of the American society…

The two methods of marketing research in Chapter 4 and Chapter 5 of PBS FRONTLINE’s The Persuaders were a focus group (Chapter 4) and the use of Acxiom (Chapter 5). In the video, Dr. Clotaire Rapaille hosted a focus group to “decode” the word Luxury for the Luxury Marketing Counsel America, which includes corporations such as Boeing and Acura. The purpose of marketing research is finding an effective marketing campaign that would attract target consumers and have a competitive advantage;…

3B. HEMPEL (20 points): Describe the viewpoint of Hempel regarding the role of induction and deduction in each following: (a) Generating new theories According Hempel’s perspective, the scientific inquiry can divide into two groups. Firstly, it is the empirical sciences which related to the science that tend to explore, describe, explain, predict the occurrence in the world. For the empirical science, it will be accepted whether the researches are supported by empirical evidences from the…

• VOXEL BASED MORPHOMETRY: APPROACH FOR ASSESSMENT OF ALZHEIMER'S DISEASE USING ADNI DATA • ABSTRACT • INTRODUCTION • MRI PROCESSING • VOXEL BASED MORPHOMETRY o What is a voxel o VBM methodology • SPM o Preprocessing o Statistical Analysis • ADNI o Database • CONCLUSION • References ABSTRACT The curiosity to look into the brain has always interested researchers. As the brain grows in size its functioning improves and at a later age (old age) it also deteriotes.MRI…

where data is small.  If the data requires numerous observations then ranking method becomes difficult.  Less powerful for data which is normal  Less efficient for data which is normal. References Bradley., J. V (1968), Distribution Free Statistical Tests. Prentice Hall: Englewood Cliffs, NJ. Dallal GE (1988), "PITMAN: A FORTRAN Program for Exact Randomization Tests," Computers and Biomedical Research, 21, 9-15. Ellis JK Russell RM Makraurer FL and Schaefer EJ (1986), "Increased…