Man6905 Databases And Business Intelligence Assessment Answers

Answer:

London Average Air Quality Level Dataset

The dataset shows background and roadside average records about Nitric Oxide, Nitorgen Dioxide, Oxides of Nitrogen, Ozone, Particulate Matter (PM10 and PM2.5), and Sulphur Dioxide measured in Micrograms per Cubic Meter of Air (ug/m3). The spreadsheet clearly shows index value with levels per each reading that falls under category with containing charts. The charts can show pollutant level with measuring the pollution effect with instance of time of day per month. Trend graph of Nitrogen Dioxide and Particulate Matter PM2.5 are considered as major part of discussion. The air quality strategy can be adopted with proper policy so that the improvement of air quality can be supported with monitoring the network over London for providing accurate and updated information about air quality trends as per London weather conditions.

Each pollutant in the dataset are measured with every 15 minutes so that London Air Quality Network and average value can be estimated from these individual measurements. The averages into the process is shown with placing then into relevant DRFRA air quality index for weather bands for indicative process. The official air quality should not be monitored as per European legislation as well. A summary of air pollution definition can be performed with sources so that consequences as discussed.

London Authority Average Rent Dataset 

Weekly amounts charged by local authorities for social housing are called as rents and the data is based on financial year values. Stock figures and data is presented for estimating and showing the average of each country, region, and nationwide values. Average rent data between 2003/2004 and 2007/2008 can be based on entire stock figures that can be used for Housing Revenue Account (HRA) and that is audited for base claim format. Before, the year region 2003/2004; average rent data is dependent on total stock figures from Housing Revenue Account (HRA) and based in subsidy claim format. For 2008/2009 rent data, the total stock figure is shown at the beginning of financial year and the data is considered from HRA over subsidy base data format. The average rent data for that year is provisional and the data will be updated in case the stock value can be started in following year and that becomes available.

Some authorities in rent division can determine stock figures in order to consider the rent reports over average rent. There are some local authorities for average rent for 2003/2004 along with lower value that 2002/2003. In case one local authority considers the estimation for regional and national averages in Midyear transfers. The values refer to authorities convenient to stock either being full or half during the financial year.   

Screen captures

The case processing data summary shows that month and mean value of Nitric Oxide amount is used together for preparing a cross tabulation analysis over SPSS analytics. The considered data has some missing values; in exact amount of 20.5% over the entire dataset; 79.5% data is valid for analysis process.  

The Air Quality data analysis over chi-square test shows that coefficient value is much higher as estimated at 8463 and the significance value is estimated at more than 0.05. The significance f value being more than 0.05; the data month and pollutant amount is not related on an overall basis. The clustered bar chart in this analysis work shows the month wise reading of pollutant amount that emits in each month with polluting the air quality. The review of data can be effective for scientific analysis.      

London Authority Average Rent Dataset

The case processing summary data shows that here areas and 2015-2016 year range rent value is considered for this cross tabulation analysis work. However, unlike another dataset; here no missing data exists and all considered data is valid for analysis in this process.

The table shows chi-square test over taking all facts and data about rent values with corresponding year range wise rent values. The chi-square value sows that significance value is more than 0.05; hence, the area wise values are not related with year wise values about rent data into the analysis.   

Important features of Data mining tools 

In this section four different features for data mining tools are described as regression, association rule discovery, classification, and clustering. The features are:

Regression: The regression feature is most common feature of any data-mining tool available; the tool deals with straightforward yet simple version of technique with predictive analysis process. The regression analysis researcher can utilize for provided dataset along with other major features such as assuming linear or nonlinear mode of dependency.    

Association rule discovery: Association rule discovery is another important feature for data mining tools. The association rule discovery can work with simple method so that the researcher can work with the rules. The rule is to be followed as X -> Y and the rule should be able to minimally support the support and confidence. The set of records should be used for finding dependency rules so that occurrence should be discovered.     

Classification: The classification model feature of data mining tool follows handling of data over modeling phase. The researcher can be able to distinguish the data over chosen set of attributes so that based on class; the model can predict the unseen or unknown records for similar datasets. The label of class can be seen or known with provided all value of attributes as well.  

Clustering: Clustering of data can be used for determining the object grouping over different consumer groups for objects that can be prepared over same cluster based on some certain rules or conditions. The clustering problem stands into sense of reducing the similarity issues into the dataset.  

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