Consider the correlation between multiple features (look up correlation plots and sns. heatmap). Try to show redundancy in a group of features (e. g. body and html might co-occur relatively frequently, or you might be able to design a feature that captures all html tags and compare it to these). Visualize which words have high or low values for some useful statistic. Visually depict whether spam emails tend to be wordier (in some sense) than ham emails

In a compound condition, both conditions on either side of the logical operator and must be true for the overall condition to be true. a: true b: false

Assume the existence of a bankaccount class. define a derived class, savingsaccount that contains two instance variables: the first a double, named interestrate, and the second an integer named interesttype. the value of the interesttype variable can be 1 for simple interest and 2 for compound interest. there is also a constructor that accepts two parameters: a double that is used to initialize the interestrate variable, and a string that you may assume will contain either "simple", or "compound", and which should be used to initialize the interesttype variable appropriately. there should also be a pair of functions getinterestrate and getinteresttype that return the values of the corresponding data members (as double and int respectively).

How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.