In the Equilibrium lab, the student measured the equilibrium constant at five different concentrations and obtained the following results:   Trial 1: 165 Trial 2: 145 Trial 3: 136 Trial 4: 179 Trial 5: 135 I want to know where you get 2.776 in question 3.

Appl Of Ms Excel In Analytical Chemistry
2nd Edition
ISBN:9781285686691
Author:Crouch
Publisher:Crouch
Chapter4: Least-squares And Calibration Methods
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In the Equilibrium lab, the student measured the equilibrium constant at five different concentrations and obtained the following results:

 

Trial 1: 165

Trial 2: 145

Trial 3: 136

Trial 4: 179

Trial 5: 135

I want to know where you get 2.776 in question 3.

the average value of the constant 152
standard deviation of the constant value (2 sig. fig)
confidence range for 95% confidence level (2 sig. fig)
[Select]
percent error if the accepted value was 166.5 (2 sig. fig)
[Select]
precision of the measurements (mean+/-confidence range) 152 +/- 24
Answer 1:
152
Answer 2:
19
Answer 3:
24
Answer 4:
8.7%
[Select]
Answer 5:
152 +/- 24
>
Transcribed Image Text:the average value of the constant 152 standard deviation of the constant value (2 sig. fig) confidence range for 95% confidence level (2 sig. fig) [Select] percent error if the accepted value was 166.5 (2 sig. fig) [Select] precision of the measurements (mean+/-confidence range) 152 +/- 24 Answer 1: 152 Answer 2: 19 Answer 3: 24 Answer 4: 8.7% [Select] Answer 5: 152 +/- 24 >
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