Question

uestion 1:

The sales of a company (in million dollars) for each year are shown in the table below, identify the linear regression model in the form y=mx+b and report the values of m (slope) and b (intercept) as well as the estimated value of y when the value of x is 10.

x (year)	2005	2006	2007	2008	2009
y (sales)	12	19	29	37	45

m=

NOTE: You should consider the value x as the elapsed time. For 2005 this would be 0 years, for 2006 it would be 1 year and for 2012 it would be 7 years.

What is the value of b?

Question 2:

Assuming you have a linear model in which the value of m is .05 and the value of b is 10 that explains the relationship between income and credit extended. If income is 50,000, what credit will be extended?

Select one:

a. 500

b. 5010

c. 2050

d. 2510

Question 3

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 4

Assume that you have a data set which produces the following data plot. You wish to predict if a new case would be a ‘red’ case as opposed to a ‘blue’ case based upon the input attribute data. Which technique should you use?  

Select one:

a. Linear Regression

b. Curvilinear Regression

c. Spline Regression

d. Logistic Regression

Answer 1