6. The Jaccard coefficient between two sets {a, b, c, d, e, f, g} and {a, b, g, h, i, j} is:   Group of answer choices 0.2 0.3 0.4 0.5

KNN  is a technique used to estimate new values based on the similarity of known ones. In this assignment, your company wants you to estimate the selling price of a customer's building   The price you calculate will be given to the customer as the company selling price recommendation.  You decide to use Data Science techniques such as the K-Nearest Neighbor.(KNN)  You will need to: Import the necessary libraries from your program. (You can use the model class sklearn.neighbors.KNeighborsClassifier,   part of the package  sci-kit-learn 1.1.1 (Links to an external site) or any other. Train/test the model with the data included in the module (cal_housing.tgz).   The house you need to estimate the value for has the following properties: longitude: 120.75latitude: 39.34housingMedianAge: 35.5total rooms: 260totalBedrooms:120  population:540households: 12medianIncome:1.8 K BuildingValue:  ?   What is the recommended price? You need to provide the code, properly commented.   You could use…

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This problem is taken from the delightful book "Problems for Mathematicians, Young and Old" by Paul R. Halmos. Suppose that 931 tennis players want to play an elimination tournament. That means: they pair up, at random, for each round; if the number of players before the round begins is odd, one of them, chosen at random, sits out that round. The winners of each round, and the odd one who sat it out (if there was an odd one), play in the next round, till, finally, there is only one winner, the champion. What is the total number of matches to be played altogether, in all the rounds of the tournament? Your answer: Hint: This is much simpler than you think. When you see the answer you will say "of course".