5. Create a MATLAB Script to do a linear, quadratic and exponential regression (using polyfit and Isqcurvefit MATLAB regression functions) and plot the points and the curve. Test it for the following data sets. a. x[123] and y = [148] b. x [-1012] and y = [ 1/3 139] x = [018 12 27] and y = [12345]

Data modeling is most often accomplished through the use of a(n) __________________. a. entity-relationship diagram b. data-flow diagram c. functional decomposition diagram d. activity diagram

Using a graphics program, develop an entity-relationship diagram for a database application for an Internet bookstore where students buy textbooks from a salesperson and receive invoices for their purchases. Use Figure 5.5 as a guide.