Black Thread Method

This assignment requires us to leave home plate (the classroom) and make a trip to the computer lab to

gather information. Go to the web address,

www.atlantabraves.com/braves_b_h_h_CareerRecord/0,1966,10,00.html

This should bring up the career stats on the great Hank Aaron.

Print this page for use on this project, which we will do in class.

Using the graphing calculator enter the years from ‘54 - ‘74 as L1. L2 will be the cumulative totals of

Hank Aaron’s home runs from ‘54 - ‘74.

Plot these points on the graphing calculator using Zoom 9 to set the window.

Using what is referred to as the black thread method, choose two points that appear to best fit the plotted

points. These will be the coordinates used to write what is known as the best fit linear equation.

Using these points we will calculate the slope of the line.

Use the point - slope method to write the equation, which is known as a linear regression.

Write this equation in the form y = mx + b, the slope - intercept form. Your answers may vary.

Let’s check with the calculator to see how the black thread method compares with the calculator’s results.

Write down the calculator’s results. ____________________________________

Graph this equation along with stat plot 1.

Was your black thread in the strike zone or was it out in left field??

Worksheet # 6