Chapter3: Statistical Tests With Excel
Section: Chapter Questions
Problem 3P
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Question
please help me find average and standard deviation
![Trial #
1
2
3
PART III.5
Tf (ave), pure H₂O
(°C)
Unrounded
-0.100
Tf, unknown (aq)
(°C)
► Standard deviation hint
-2.6
Average molar mass of unknown (g/mol)
-2.6
-2.6
Standard deviation of molar mass of unknown
Freezing Point Depression of unknown
(AT) (°C)
90% Confidence limit of molar mass of unknown
Unrounded
2.5000
2.5000
2.5000
Using the data obtained and values calculated for Part III, complete the following table.
Unrounded
3
3
Rounded
3
2.5
2.5
2.5
Molar mass of unknown,
(g/mol)
Unrounded
57.9604
362.252
57.9604
57.9604
Rounded
3
3
3
X
Rounded
58.0
58.0
58.0](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fef1a4aff-641f-4841-ac31-b0a2759bec0f%2Fc2ed4457-2b29-4af9-965d-f67df44954a8%2Fx37njgm_processed.png&w=3840&q=75)
Transcribed Image Text:Trial #
1
2
3
PART III.5
Tf (ave), pure H₂O
(°C)
Unrounded
-0.100
Tf, unknown (aq)
(°C)
► Standard deviation hint
-2.6
Average molar mass of unknown (g/mol)
-2.6
-2.6
Standard deviation of molar mass of unknown
Freezing Point Depression of unknown
(AT) (°C)
90% Confidence limit of molar mass of unknown
Unrounded
2.5000
2.5000
2.5000
Using the data obtained and values calculated for Part III, complete the following table.
Unrounded
3
3
Rounded
3
2.5
2.5
2.5
Molar mass of unknown,
(g/mol)
Unrounded
57.9604
362.252
57.9604
57.9604
Rounded
3
3
3
X
Rounded
58.0
58.0
58.0
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