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).
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 22SGR
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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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