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Home > CCA > Chapter 6 > Lesson 6.1.4 > Problem 6-42

6-42.

Robbie’s class collected the following view tube data in problem 6-1. Homework Help ✎

Distancia desde la pared (plg)

Amplitud del campo visual (plg)

19.6

17.3

14.8

13.1

11.4

9.3

checksum

checksum 106.2

  1. Use your calculator to make a scatterplot and graph the least squares regression line (LSRL). Sketch the graph and LSRL on your paper. Remember to put a scale on the x-axis and y-axis of your sketch. Write the equation of the LSRL rounded to four decimal places.

    See scatterplot below. y = 1.6568 + 0.1336x

    graph

  2. With your calculator, find the residuals as you did in part (c) of problem 6‑33. Make a table with the distance from wall (inches) as the first column, and residual (inches) in the second column. What is the sum of the squares of the residuals?

  • See table below.
    Use your calculator to find the sum of the squares of the residuals.

    table