Misy 5370 - Midterm Questions With Correct Answers Rated A+

Model Assessment {Ans: Evaluate models by comparing performance on appropriate data sets.}Uses of Data Visualization {Ans: •Helpful for identifying data errors. •Reduces the size of your data set by highlighting important relationships and trends in the data.}Non data ink {Ans: Ink used in a table or chart that serves no useful purpose in conveying the data to the audience}Variable representation {Ans: • In many data-mining applications, the number of variables for which data is recorded may be prohibitive to analyze.}When to use hierarchical clustering {Ans: Suitable when we have a small data set (e.g., less than 500 observations) and want to easily examine solutions with increasing numbers of clusters Convenient method if you want to observe how clusters are nested Unsupervised Learning}Second development {Ans: • Advances in computational approaches to effectively handle and explore massive amounts of data • Faster algorithms for optimization and simulation, and • More effective approaches for visualizing data}