2. Error Analysis: How accurate is your straight line? a. Examine your graph. Do most of your points fall on the best fit line, or are there outliers? b. The R² value is a measure of how close your experimental values match the corresponding values from the straight line. If R²>0.95, this indicates the straight line is a good approximation of your data. If R² <0.95, then then the line is not a good approximation of your data. Discuss how good your fit is based on the R² value.
2. Error Analysis: How accurate is your straight line? a. Examine your graph. Do most of your points fall on the best fit line, or are there outliers? b. The R² value is a measure of how close your experimental values match the corresponding values from the straight line. If R²>0.95, this indicates the straight line is a good approximation of your data. If R² <0.95, then then the line is not a good approximation of your data. Discuss how good your fit is based on the R² value.
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter11: Solutions
Section: Chapter Questions
Problem 74AP
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Question
![2. Error Analysis: How accurate is your straight line?
a. Examine your graph. Do most of your points fall on the best fit line, or are there outliers?
2
b. The R² value is a measure of how close your experimental values match the corresponding values from the straight line. If R2>0.95, this indicates the straight line is
a good approximation of your data. If R² <0.95, then then the line is not a good approximation of your data. Discuss how good your fit is based on the R² value.
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Transcribed Image Text:2. Error Analysis: How accurate is your straight line?
a. Examine your graph. Do most of your points fall on the best fit line, or are there outliers?
2
b. The R² value is a measure of how close your experimental values match the corresponding values from the straight line. If R2>0.95, this indicates the straight line is
a good approximation of your data. If R² <0.95, then then the line is not a good approximation of your data. Discuss how good your fit is based on the R² value.
W
F2
3
E
20
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4
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F5
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6
MacBook Air
F6
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![yout References Mailings Review View
rt Endnote
t Footnote ✓
w Notes
es
5
Search Researcher
Absorbance
5
4.5
4
3.5
2.5
2
1.5
1
0.5
0
Research
0
Insert
Citation
1
1. Construct a standard curve in Excel by plotting concentration (in ppm) on your x-ax
(unitless) on your y-axis for your known solutions. Label the axes on the graph and provi
title. See Figure 5 in the lab handout for an example. Use a linear trendline to generate a
data. Label the graph with the equation and the R2 value. Insert your labeled graph in the
Help
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2
Bibliography
Citations & Bibliography
Sciwheel
Nitrate Standard Curve
3
4
ty=0.8842x-0.8191
R²=0.9509
Q..**.
Concentration
Insert
Caption
5
6
Insert Table of Figure
Update Table
Cross-reference
Captions
ww
7
2. Using the equation from your graph, determine the nitrate concentration (in ppm) in each of
samples.
Text Predictions: On Accessibility: Investigate
O Search
8509
FORGE
*](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F898e1259-1d17-4d43-997e-970342ff2b79%2Fcb043914-0e3e-47a1-bf24-b563b0db9c66%2F496worf_processed.jpeg&w=3840&q=75)
Transcribed Image Text:yout References Mailings Review View
rt Endnote
t Footnote ✓
w Notes
es
5
Search Researcher
Absorbance
5
4.5
4
3.5
2.5
2
1.5
1
0.5
0
Research
0
Insert
Citation
1
1. Construct a standard curve in Excel by plotting concentration (in ppm) on your x-ax
(unitless) on your y-axis for your known solutions. Label the axes on the graph and provi
title. See Figure 5 in the lab handout for an example. Use a linear trendline to generate a
data. Label the graph with the equation and the R2 value. Insert your labeled graph in the
Help
Manage Sources
Style: [APA
2
Bibliography
Citations & Bibliography
Sciwheel
Nitrate Standard Curve
3
4
ty=0.8842x-0.8191
R²=0.9509
Q..**.
Concentration
Insert
Caption
5
6
Insert Table of Figure
Update Table
Cross-reference
Captions
ww
7
2. Using the equation from your graph, determine the nitrate concentration (in ppm) in each of
samples.
Text Predictions: On Accessibility: Investigate
O Search
8509
FORGE
*
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