Density & Statistics

Objective of this experiment:

To use statistical techniques to extract the maximum amount of information
out of a limited data set and calculate the inherent uncertainty
in the measurements.

For another presentation of statistics,
see appendix A on pgs. A1-A8
at the back of your Chem1 text-
"Chemistry-Science of Change, 3rd. ed." by Oxtoby, Freeman & Block

Terms to know for the mid exam:

Random error
Systematic error
Accuracy
Precision
Relative error
Absolute error

Know:

Calculation of standard deviation, mean and confidence interval
Use of t-tables

The confidence interval for an experiment may be improved (narrowed) by

1. collecting more data-not very practical after 5-6 points
2. reducting the standard deviation-using better technique or equipment-
this is the most efficient way

Spreadsheet tutorials are available online at

Collection of Spreadsheet Tutorial Links...

These tutorials are links to other universities and were not developed at UMR, but may be of use in understanding spreadsheets in general.