Data Mining and Machine Learning

Question 19 Not yet answered Marked out of 1.00 Flag question Question text True/False: A regression model has a R2 statistic of .15. This indicates that the regression model is NOT a good fit and does a poor job of predicting the outcome based upon the input variables. Select one: True False Question 20 Not yet answered Marked out of 1.00 Flag question Question text A linear regression model is expressed as y 0+ 1x where 0 is the intercept and 1 is the slope of the line). The following equations can be used to compute the value of the coefficients 0 and 1.

Using the following set of data, find the coefficients 0 and 1rounded to the nearest thousandths place and the predicted value of y when x is 10. {(-1 , 0),(0 , 2),(1 , 4),(2 , 5)} What is the value of 1. Answer: Question 21 Not yet answered Marked out of 1.00 Flag question Question text True/False: Shared nothing architectures distribute the processing of queries to access large volumes of data and provide near linear scalability in both storage volume and query performance. Select one: True False Question 22 Not yet answered Marked out of 1.00 Flag question Question text When data observations are placed into specific groups according to their observed characteristics this is known as: ______________ Select one: a. Classification b. Decision Tree Analysis c. Clustering d. Regression