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A cell phone's SAR (Specific Absorption Rate) is a measure of the amount of radio frequency (RF) energy absorbed by the body when using a cell phone. The rate can vary by the distance of the phone from the ear. Below is a table showing SAR (y) and distance (x) for a sample of five 10 minute calls. Relationship between distance and SAR Distance (cm) SAR level 1.0 46 1.6 41 1.8 42 2.2 30 2.4 31 The slope of the least squares line is 59.6. The intercept is -12. Compute the "total variation" (SST).

A cell phone's SAR (Specific Absorption Rate) is a measure of the amount of radio frequency (RF) energy absorbed by the body when using a cell phone. The rate can vary by the distance of the phone from the ear. Below is a table showing SAR (y) and distance (x) for a sample of five 10 minute calls. Relationship between distance and SAR Distance (cm) SAR level 1.0 46 1.6 41 1.8 42 2.2 30 2.4 31 The slope of the least squares line is 59.6. The intercept is -12. Compute the "total variation" (SST).

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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A cell phone's SAR (Specific Absorption Rate) is a measure of the amount of radio frequency (RF) energy absorbed by the body when using a cell phone. The rate can vary by the distance of the phone from the ear. Below is a table showing SAR (y) and distance (x) for a sample of five 10 minute calls.

Relationship between distance and SAR

Distance

(cm)

SAR

level

1.0

46

1.6

41

1.8

42

2.2

30

2.4

31

The slope of the least squares line is 59.6. The intercept is -12. Compute the "total variation" (SST).

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