# Least Squares and Scatterplot

See attached file. Description is in attachment

Sketch a scatterplot data

Let s represent salary and let t represent year. The least squares regression

line that best fits this sata set is s = 13.199t- 25,812. Sketch this line on

the graph with the scatterplot and describe what you see.

Compare this line with the line given in Example 6.2. What value for

salary do you get from each of the lines if you substitute the value 2001

for the variable t, and what do those values tell you?

https://brainmass.com/math/graphs-and-functions/least-squares-scatterplot-239475

#### Solution Preview

Hi,

Please find the solution/explanation attached herewith.

The following table gives the median weekly earnings of full-time wage and salary workers 25 years and older who have had one to three years of college.

Year Salary($)

1980 304

1982 351

1984 382

1986 409

1988 430

1990 476

1992 485

1994 499

1995 508

1996 518

1997 535

1998 558

1999 580

2000 598

A) Sketch a scatter-plot ...

#### Solution Summary

This provides examples of working with data including a least squares regression and scatterplot.