Using KNN method, predict the most likely performance for a new part-time staff with personality grade 3 and motivation grade 3. Use Euclidean distance to measure the distance in your answer. Determine your answer using K=1 and K=3. Compare and comment on your answer.
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Following the machine learning task in Question 1(d), a simplified version of the dataset can be represented by Table Q3. The dataset contains eight items
representing the performance of a staff based on their personality grade (X) and motivation grade (Y).
[Table Q3: Performance of a staff based on their personality grade (X) and
motivation grade (Y)]
Using KNN method, predict the most likely performance for a new part-time staff with personality grade 3 and motivation grade 3. Use Euclidean distance to measure the distance in your answer. Determine your answer using K=1 and K=3. Compare and comment on your answer.
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- Why is RMSE generally the preferred performance measure for regression tasks? A. Because it gives an idea of the average percentage deviation of the predictions from the actual values. B. Because it gives an idea of the average absolute deviation of the predictions from the actual values. C. Because it gives an idea of how much error the system typically makes in its predictions, with a higher weight given to large errors. D. Because it gives an idea of the average deviation of the predictions from the actual values.TESTING YOUR UNDERSTANDING Exercise 3-1. Consider the scenario described at the beginning of this chapter: When parents call to say that children are sick, we have to let their classroom teachers know, and if it's sports day and the child is on a school team, the sports teacher might have to sort out substitutes. Then we need to count up all the days missed to put on the child's report. The Department of Education needs the totals each term, too. Run through the steps in the summary section and sketch some use cases and an initial data model. Assume that the main objectives are to record the absences for the classroom teacher, for school reports, and for statistics given to the Department of Education.this data sceince questions please explain in details In a survey of 1000 people, the following preference is observed. Is buying computer correlated with the student status? Is this relationship significant with 90% significance level? With a support of 30% and confidence of 30%, write two significant association rules from this dataset. Find out the maximum itemsets from this dataset considering the support threshold of 30%.
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- Credit ScoringNoneThe predictive performance of a model is the measure of how close the model’s prediction values are to the actual values. A close-to-ideal model would have the minimum error in the predicted and actual values. The validation set is used to assess the predictive ability of the model which has been trained using the training set. True False
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