StudentShare
Search

# Cluster Analysis - Essay Example

Summary
Cluster analysis is a technique which can be used to classify cases into groups or clusters which are homogeneous. The cases in each cluster are similar to each other and are different from cases in other clusters. In this case it is not necessary to have prior information about the group…

## Extract of sample "Cluster Analysis"

Download file to see previous pages There are various statistics associated with cluster analysis which are used for analyzing the data.
Clustering can be hierarchical or non hierarchal and these are further classified into various methods. Hierarchal clustering is developed as a tree like structure. This method can be either agglomerative or divisive. In agglomerative clustering each object is formed as a separate cluster which is formed by grouping into bigger clusters and the process is continued till all the cases form as members of a single cluster.
In agglomerative method, the various methods such as linkage methods, error sum of squares or variance and central methods are used. Linkage method includes single linkage, complete linkage and average linkage. The single linkage method is based on the minimum distance. The complete linkage is based on the maximum distance. And the average linkage is based on the average distance between all pairs of objects, so that one member of the pair is from each of the clusters. Variance method is used to minimize the within -cluster variance. Ward's procedure is a variance method where the squared euclidean distance to the cluster means is minimized. In the centroid method the distance between the two clusters is computed as the distance between their centroids. Generally the average linkage and Ward's method are supposed to perform better than other procedures. Now we shall discuss the various statistics associated with cluster analysis.
Agglomerative schedule gives information on the cases being combined at each stage of a hierarchical clustering.
The mean value of the variable associated with all cases in a cluster is known as cluster centroid.
Dendogram is a tree like graph which displays the result of cluster analysis. The clusters which are joined together are represented by vertical lines. The position of line indicates the distance where the clusters are joined. This graph is a generally read from left to right.
The distance between cluster centers indicates how the pairs of clusters are separated. If the clusters are widely separated and distinct then they are desirable.
Icicle diagram is a graph, which displays the clustering results. It is called as icicles which hang from the eaves of a house. The columns represent the cases being clustered and the rows correspond to the number of clusters. This diagram is read from bottom to top.
In this case chestnut ridge club clustering is considered on the attitude of the respondents in terms of joining a club. And the respondents expressed on a scale of 1-5, the objective here is group similar cases and to measures how similar or different the case are. The approach is to measure similarity in terms of distance between pairs of objects. There are different methods to measure the distance. These methods can be used to measure and the results can be compared.
In hierarchical clustering agglomerative clustering is selected and Wards procedure is used to measure the distance. Generally the choice of clustering method and choice of a distance measure are related.
Here the variables are measured on a five-point scale. The Wards linkage method is used to find the average distance between all pairs of objects. In this variance method the squared Euclidean distance to the cluster means is minimized.
The important outputs obtained here are agglomeration schedule which shows the number of clusters combined at each ...Download file to see next pagesRead More
Cite this document
• APA
• MLA
• CHICAGO
(“Cluster Analysis Essay Example | Topics and Well Written Essays - 3750 words”, n.d.)
Cluster Analysis Essay Example | Topics and Well Written Essays - 3750 words. Retrieved from https://studentshare.org/miscellaneous/1534600-cluster-analysis
(Cluster Analysis Essay Example | Topics and Well Written Essays - 3750 Words)
Cluster Analysis Essay Example | Topics and Well Written Essays - 3750 Words. https://studentshare.org/miscellaneous/1534600-cluster-analysis.
“Cluster Analysis Essay Example | Topics and Well Written Essays - 3750 Words”, n.d. https://studentshare.org/miscellaneous/1534600-cluster-analysis.
Click to create a comment or rate a document

## CHECK THESE SAMPLES OF Cluster Analysis

### Charles Messier's Butterfly Cluster

... Charles Messier's Butterfly Cluster Introduction Our galaxy contains nearly 400 billion stars including many comets, nebulas and star clusters. Star clusters, or Messier objects, are collections of many stars in our galaxy. In the past astronomers confused them with comets; however, Charles Messier (a French scientist) observed them very carefully throughout his life and discovered 15 comets along with 103 other celestial objects which were later named Messier objects. He actually searched for comets and to avoid confusion between comets and Messier objects, he and his colleagues compiled them in a list in 1771. It was a remarkable achievement. The list is known as the Messier Catalog or Messier Object List. The list contains a total...
5 Pages(1250 words)Essay

### The California Wine Cluster

...?The California Wine Cluster Question The foundation of wine production in California is grounded upon development of grapes for utilization in sacrosanct wines in the mid-to-late 1700s by first winemakers in California. Then in the 1830s and 1840s the first business vineyards were built. Wine merchants began to survive by making grape juices and medicinal wines. Most wine grape producers were spotted in North Coast, which was discerned to have the state's best combo of soil, atmosphere, geology, and water for wine grapes. Other than this, the areas that had been non-plantable earlier because of oppressed seepage and deficient water supplies were improved owing to the massive endeavors; this boosted up the production of wine grapes (Porter...
3 Pages(750 words)Assignment

### Article Critique - Cluster Analysis Examination of Serial Killer Profiling Categories: A Bottom-Up Approach

...presented the critical analysis of the research article “Cluster Analysis Examination of Serial Killer Profiling Categories: A Bottom-Up Approach”. Together with the analysis, the work at hand also presents the remarkable use of data together with their actual gathering. Above all, the relevant findings are also presented, by which we substantially generate an important thought whether the entire research article will eventually make sense particularly for the FBI. Furthermore, there is remarkable information we generate that indeed, the study of Taylor et al. is a significant contribution to the body of knowledge, particularly in crime investigation and other related...
4 Pages(1000 words)Essay

### A Comparison of Some Methods of Cluster Analysis with SPSS

... and Clustering Statistical analysis is the process by which those conducting research and analysing data, can determine who or what within a dataset, fit certain patterns and trends. There is always a dependent or prominent variable which is affected by independent variables under different analytical circumstances and then there is clustering a group of people, for example, who may have similar buying propensities or who respond the same way to a certain dosage in a medical treatment (Norusis 361). As Burns and Burns describe it, cluster analysis classifies ‘a mountain of information into manageable meaningful piles’ (552). Clustering into groups helps in identifying and classifying particular categories into a membership...
70 Pages(17500 words)Dissertation

### Quantitative Research (Cluster and Regression Analysis)

... source. Another weakness of the data has been observed in the varying proportion of the different categories of buying which will have an influence on the application of the cluster analysis technique. Sample Size The study has not identified the total number of customers of the three stores and hence it would be difficult to comment on the randomness of the sample selected. A comparison of the total number of customers and the number constituting the sample size would have thrown some light on the comparability of the loyal customers between the customers who shopped generally during the period under study and the number of customers who opted to use the loyalty program. Basis for Collection of Information - Clustering Variables...
8 Pages(2000 words)Essay

### Cluster Competencies and Their Behavior

...Cluster Competencies and their Behavior Cluster competencies can be considered to be ways and strategies which are used to increase he effectivenessof any situation. They are more commonly used in the strategy making of organizations. In simpler terms, it refers to individuals coming together to increase the effectiveness of any situation. It is characterized into many different forms which are discussed below. Strategy and Achieving Results Strategic Orientation This is used in the making of educational plans and programs to cover a wider breath of subjects and topics. It contributes positively to the relationship of the main educational institutions like the further and higher institutions. Planning and Organizing...
2 Pages(500 words)Essay

### Cluster Analysis: Basic Concepts and Algorithms

..., the entire population under statistical study the cases are grouped based on their similarities. Distance between each member of the population is also used as basis in cluster analysis. Part 2 Based on the criteria of years as member of the club, distance from the club and club membership, the stage one cluster has one group under and cluster two has three groups under its wings. The coefficient of stage one is 1788. The cluster under stage two has one group under it and cluster has two groups under it. The coefficient under stage two for both clusters is 33445. Based on the criteria of years as member of the club, distance from the club and club membership, The cluster with the most population is the distance from the club...
7 Pages(1750 words)Case Study

### Cluster Analysis Technique

.... Cluster analysis is used in many restaurants, especially those that cater to people of different race. As in America, people of different races frequent famous restaurants. Thus, the cluster technique can be used to segment the market into these different races. The owners and managers then can specifically suit the need the specific race as to their eating habits and their tastes. Factor analysis is also used by business especially to analyze a large volume of measurements and to search for their interrelationships. “A restaurant chain might gather and conduct factor analysis for a large volume of data on consumer preferences in order to determine the relative importance of portion size, pricing, and perceived quality” (LoveToKnow, Corp...
1 Pages(250 words)Essay

### Critical analysis of conventionon cluster munitions

... and China accept the need to participate in the international agreement against cluster munitions and stop using this type of weapons in their military operations. Works Cited Abramson, J. “Treaty ANALYSIS: The Convention on Cluster Munitions”, Arms Control Association, December 2008. Web. 08 September 2010. Cernig. “Is Israel Using Cluster Munitions on Urban Areas?”, News Hoggers, 2009. Web. 08 September 2010. Cluster Convention. “Ratifications and Signatures”, Convention on Cluster Munitions, 2010. Web. 08 September 2010. Gray, D. “Will the Cluster Munitions Convention Prove Ineffective”, International Relations, 16 June 2010. Web. 08 September 2010. Hiznay, M. Operational and Technical Aspects of Cluster Munitions. Human...
14 Pages(3500 words)Essay

### Multivariate analysisand cluster

...MULTIVARIATE ANALYSIS MULTIVARIATE ANALYSIS Introduction In multivariate analysis, extension of the univariatenormal assumption is extended more than one variable that has the normal distribution. In a multivariate analysis, the variables are said to normally distributed with mean vector and variance-covariance matrix. The univariate case in comparing the mean among the population is we use the t-test (Williams VS, Morlock RJ, Feltner D 2010). The multivariate corresponding to the t-test is the t-hoteling. In a T - Hotelling we compare the population mean, that is more than one sample meaner. In this case, the sample must come from a normal population. This analysis is aimed at investigating the significant difference between the USFOX...
7 Pages(1750 words)Speech or Presentation

### Analysis of the Methods of 3 Research Papers about Child Abuse

Research ethics was maintained as the identity of the individuals participating was kept secret. As far as the validity of the study was concerned, the researchers attempted to use content validity in order to get an accurate response. The content validity focused on measuring off the ethnicities and gender percentages within the area and attempting to get a random sample of individuals via the phone. Their approach to random calling allowed for a significant random sample in the study. There were a few issues, however, with this type of approach. Those answering the phone sometimes were not always the desired individual, and not all of the desired people were surveyed. Different replacements did have to be used, and the attempt w...
6 Pages(1500 words)Literature review

### Comparative Family Analysis

The second component of this essay will be a comparative analysis with the American family to the Arab family, generally speaking, but also clearly described by Homa Hoodfar, in her book Between Marriage and the Market. This essay will discuss the impact of globalization on different types of families in different societies and cultures. The terms ‘traditional’, ‘modern’ and ‘postmodern’ will be defined, elaborated upon and discussed on a continuum of change. Social change, in the face of globalization, will be discussed in relation to how cultures and families have grown or resisted the forces of globalization. We now turn to an exploration of the types of families in the world and follow...
6 Pages(1500 words)Coursework

### Economic Analysis of India

The country’s economy is fast growing with a stable political system that encourages foreign investment although with certain restrictions. The country generally has good energy, transport and communication systems which make the cost of doing business affordably.

The Republic of India found South of Asia is by far the world’s most populous democracy and ranks seventh largest in terms of geographical area (Brown, 1994). India is also the second most highly populated country in the world. The country has a rich culture with four major religions having originally emerged from it; Sikhism, Buddhism, Hinduism, and Jainism. The Indian Republic consists of seven union territories and 28 states and ranks twelfth la...
8 Pages(2000 words)Case Study

### Airbus A 380: SWOT and Porters Five Forces Analysis

... this does not mean that the pilots are not needed, it is nonetheless an important aspect that the aircraft can go on “auto pilot” whenever desired. This comes in handy when there is rough weather or the landing conditions are inclement. The Airbus A 380 was built using the composite materials for the aircraft. This gives extra strength to the wings and underbelly and mitigates risks of accidents involving these parts. It can be said that building an aircraft is like a piece of art and the thousands of parts that go into the aircraft have to fit in with each other and the margin for error is non-existent as human lives are at stake. SWOT ANALYSIS In this section, I do a SWOT analysis of the Airline Industry with specific focus on Airbus...
6 Pages(1500 words)Case Study

### Economic Analysis on BMW Cars in the US Car Industry

Mini and the 1-series rapidly grew at a much higher rate through 2008. Since the early days of the new millennium, BMW has been one of the first automakers to utilize flexible factories in which more than one vehicle model could be produced at the same time. This enabled the company to meet shifts in market demand more effectively than BMW’s competitors could. BMW challenges to retain its market position in the international market for luxury cars. Many automakers, such as Hyundai with its Genesis sedan or Nissan's Infiniti brand are increasingly successful in realizing higher margins earned on luxury vehicles. BMW is rated behind luxury brands such as Lexus, Porsche, Mercedes, and Infiniti for these reasons

1. Th...
7 Pages(1750 words)Case Study

### Analysis of Educational Website

... Analysis of Educational Website Introduction Since antiquity, education remained a major component of human societies; however, until few decades ago, it existed in the society in its traditional and conventional form that involved one-to-one interaction of teachers with their students in classrooms. Since few years, educators and scholars have witnessed rapid advancements in the field of information and technology that has altered almost every sector of the society in a rapid manner, and so the education sector as well. In such advancements, internet has now become one of the most popular platforms for students, teachers, businesspersons, and individuals from every sector to acquire education and information within few clicks and minutes...
7 Pages(1750 words)Article

### Analysis of Articles about Climate Change

...Climate change Can we imagine an Earth where there are no green mountains, no deep blue seas and no living creatures? No. But a disaster of such magnitude and dimension is looming over Earth. Humans have identified this threat, defined it and given it a name, global warming. This dangerous proposition is based on the truth that even a 5 % increase in the surface temperature on Earth can wipe out life from this beautiful planet. And the temperature is increasing as never before. It was in 1990s that the world began to hear serious warnings on global warming and climate change. The summary for policy makers prepared as part of the first assessment report by Inter-governmental Panel on Climate Change was the first ever in depth... change Can we ...
6 Pages(1500 words)Literature review

### Analysis of Employement Law Cases

For instance, Section 82(1) of the Sex Discrimination Act 1975 provides statutory protection to workers who are working under a contract personally to execute any work or labor. It also covers self-employed people2.

Other statutes, such as the Working Time Regulations 19983 and the National Minimum Wages Act 19984, are appliable to workers, in addition to employees5. Hence, all these rights and protections are available to Fred, even if he were to be deemed a self-employed person.

Some of the more important rights bestowed upon employees by the employment law are the right to claim wrongful or unfair dismissal and payment for redundancy. Other legislation, such as the health and safety statute and the insolve...
7 Pages(1750 words)Case Study

### Analysis of the Oil Industry

In 2001 alone, the US reported earning from the industry close to two hundred billion US dollars. According to a previous study, the middle east tops the list as the largest exporters of crude oil taking over sixty-six percent of the global production of oil. Europe is the least producers of oil taking only two percent of the market share (Green, 4).
According to the American Association of Petroleum Geologists, the major problem facing the industry is lack of workforce and the increase in demand for oil. The report indicated that by 2030, the world’s oil demand is expected to increase from one hundred and three to one hundred and thirty million barrels per day. Natural gas, on the other hand, will expectedly increase t...
7 Pages(1750 words)Coursework

### CNN Inernal and External Analysis

There are quite a few news channels serving the American news-hungry people. When it is not reading the news, CNN offers critiques and insights into news items
Coming to brass tacks, CNN was the first US Cable Channel which offers 24 hours round the clock news. “It operates one of the top 24-hour news channels, reaching more than 100 million US homes. In addition to its flagship channel, the company offers HLN (formerly CNN Headline News), and it has an international division that keeps viewers informed in about 200 other countries.” (Cable news network Inc: Company description, 2010).

Perhaps one of the most conspicuous aspects of CNN is that it has an excellent contact network and reporters on the spo...
8 Pages(2000 words)Case Study