Oracle Database Application Developers Guide - Fundamentals,

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The tips data is simple. Most of the interesting features can be discovered using static plots. Yet, interacting with the plots reveals more and enables the analyst to pursue follow-up questions. 5). Multiple plots are visible simultaneously, and the highlighting action on one plot generates changes in the other plots. The two additional plots here are spine plots (), used to examine the proportions in categorical variables. For the highlighted subset of dining parties, the ones who rounded the tip to the nearest dollar or halfdollar, the proportion of bill paying males and females is roughly equal, but interestingly, the proportion of smoking parties is higher than non-smoking parties.

6 Whats in this book? 15 The tips data is simple. Most of the interesting features can be discovered using static plots. Yet, interacting with the plots reveals more and enables the analyst to pursue follow-up questions. 5). Multiple plots are visible simultaneously, and the highlighting action on one plot generates changes in the other plots. The two additional plots here are spine plots (), used to examine the proportions in categorical variables. For the highlighted subset of dining parties, the ones who rounded the tip to the nearest dollar or halfdollar, the proportion of bill paying males and females is roughly equal, but interestingly, the proportion of smoking parties is higher than non-smoking parties.

Data is often but not always quantitative, and it is often derived by processing unstructured information. It always includes some attributes or variables such as the number of hits on web sites, frequencies of words in text samples, weight in pounds, mileage in gallons per mile, income per household in dollars, years ✐ ✐ 2 1 Introduction of education, acidity on the PH scale, sulfur emissions in tons per year, or scores on standardized tests. When we visualize data, we are interested in portraying abstract relationships among such variables: for example, the degree to which income increases with education, or the question of whether certain astronomical measurements indicate grouping and therefore hint at new classes of celestial objects.

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