In a non-relational database system, an efficient way to store a list of courses a student has taken is Using a JSON format with a field named "CoursesTaken", and a value that is a single free text field to contain all courses taken. @ Using a JSON format, a field named "CoursesTaken", and an array to store the specific course names. 0 All of the above 0 None of these 0 A list of courses taken can not be stored in a non-relational database system You are designing a database to match students to jobs. A company has an "Analyst" job posted and they are looking to bring on up to 10 analysts for this role. The relationship cardinality is: 0 None of these 0 All of these 0 Many to Many 0 One to One 0 One to Many You are designing a database solution that tracks student registration for courses. You have a Student table of student names, and a Course table that is a list of courses. The cardinality here is: 0 All of these 0 One to Many 0 One to One 0 None of these 0 Many to Many Your CEO wants your BigData database platform to be able to log and store every click made on every page from every consumer when they interact with the company's website, plus some additional metadata about each click (data about the data). Based on this scenario, explain which "V's" of BigData are relevant here? Your CMO wants to test the response to a new Kimchi recipe specifically designed to appeal to the Korean community. He asks you to run a test and measure response based on a sample of 500 people. He suggests the first 500 people that have a last name of length of more than 5 letters be included in the test, and anyone with a last name shorter than 5 letters be excluded. Is this a good way assemble a sample to test response to the product? Why or why not? \fYou work for an airline and the customer database has information on Relationship Status as well as amount paid for recent travel tickets. Relationship status is coded as: 0:Single, 1:Married, 2: Divorced, 3:Widowed, 4:Commited, 5:|t's Complicated. Amount spent is in the database as actual dollars paid. Your Chief Marketing Officer wants to determine whether there is a correlation between amount spent and the customer's relationship status. She asks you to calculate the correlation between relationship-status and amount spent. Is correlation a good approach, or not? Explain. You have built a simple regression model, and during a presentation of the model, the Chief Analytics Officer asks what is the model's "coefficient of determination"? 0 He is asking for the R-squared value 0 All of these 0 None of these 0 He is asking for the amount variance explained by the model 0 He is trying to determine if the model is a good fit The difference between multiple regression and simple regression is: O All of the above 0 None of the above 0 In simple regression, there is a single predictor variable (X), but in multiple regression there can be more than one predictor (X's) O In simple regression, there is a single Yvariable that you are trying to predict, but in multiple regression there can be multiple measures (Y's) In simple regression, there is only one equation to summarize the relationship, but a multiple regression model can have more than one equation. Imagine that you are looking at a table summarizing the results of a multiple regression model. The largest coefficient value of a predictor means that variable is the most important predictor forY 0 True, because it will have the largest effect on the predicted value, Y. 0 False because the coefficient has no effect on the calculation of the predicted value, Y 0 True, but only if the coefficients for the predictors are standardized coefficients 0 All of these 0 None of these Please rate this exam (Free points, as any answer is correct) 0 Much easier than expected 0 Easier than I expected 0 About what I expected 0 More difficult that I expected 0 Much more difficult than I expected