CHE211L
Lab 1 – Excel
Name ____________________
Lab Section _______________
Introduction to Excel – Spreadsheet Data Analysis
You will need to submit this sheet, scanned, and the Excel file containing your graphs to Blackboard.
1. Explain the significance of the R squared values calculated in Part A. You may need to consult
the internet to answer this question.
2. Considering the standard deviations (error bars), is the drop in iron concentration after 61 m
statistically significant or probably just random variation? Please justify your answer by referring
to standard deviation principles.
3. Over the span of 90 m, was a greater percentage of calcium or iron lost from the stream?
Signature ____________________
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