please help me find average and standard deviation

Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN:9781285686691
Author:Crouch
Publisher:Crouch
Chapter3: Statistical Tests With Excel
Section: Chapter Questions
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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
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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