Explore BrainMass

# The answer to Regression Analysis in megastat

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

Please see attachment. The answer to the problem is attached.Please explain step by step how to calculate. A formula( what numbers to take) or can it be dome in excel? if it can what are the steps?

#### Solution Preview

Computing the sample correlation coefficient and the coefficients for the least-squares regression line
A popular, nationwide standardized test taken by high-school juniors and seniors may or may not measure academic potential, but we can nonetheless examine the relationship between scores on this test and performance in college.
We have chosen a random sample of fifteen students just finishing their first year of college, and for each student we've recorded her score on this standardized test (from 400 to1600) and her grade point average (from 0 to4) for her first year in college. The data are shown below, with denoting the score on the standardized test and denoting the first-year college grade point average. A scatter plot of the data is shown in Figure 1. Also given are the products of the standardized test scores and grade point averages for each of the fifteen students. (These products, written in the column labelled " ," may aid in calculations.)

Figure 1