SPSS Questions with correct answers

Fill in the blank. There are ___ stages in the CRISP-DM process model. - correct answer There are 6 stages in the CRISP-DM methodology. Suppose that you are working as a data miner in a project where you need to access certain tables in the database. You ask your database administrator (DBA) for access to the database and he promises to do so as soon as possible. However, a minute later your company experiences serious problems in the operational systems, which also fall under the DBA's responsibility. It is top priority for your DBA to get the operational systems up and running again, which will cost 2 days at a minimum. In the meantime you are stuck in the project, facing a deadline. Could such a situation occur in a data-mining process where CRISP-DM is followed? A. Yes B. No - correct answer B. No. Problems such as these should be acknowledged in the Business Understanding stage, and properly dealt with at that point. Suppose that you are working in a project where the business objective was to reduce churn. After some weeks of data preparation and analyses, you have built a model that identifies 95% of the churners in 10% of the data. You advise your manager to deploy the model on the current customer database, so that 95% of the potential churners can be identified (that is the expectation based your analyses). However, your manager says that 100% of the potential churners must be identified, no matter what, and so she will not deploy the model that you have built. Could such a situation happen in a data-mining project where CRISP-DM is followed? A. Yes B. No - correct answer No. It should be clear upfront that the manager only accepts a solution that identifies 100% of the churners. The data-mining goal should have been addressed in the Business Understanding stage.