Data Analysis
- Page ID
- 241
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- Dimensional Analysis
- Dimensional analysis is amongst the most valuable tools physical scientists use. Simply put, it is the conversion between an amount in one unit to the corresponding amount in a desired unit using various conversion factors. This is valuable because certain measurements are more accurate or easier to find than others.
- Instrument Calibration
- Calibration is the process of evaluating and adjusting the precision and accuracy of measurement equipment. Proper calibration of an instrument allows people to have a safe working environment and produce valid data for future reference.
- Linear and Nonlinear Regression
- Regression analysis is a statistical methodology concerned with relating a variable of interest, which is called the dependent variable and denoted by the symbol y, to a set of independent variables, which are denoted by the symbols x1, x2,…, xp. The dependent and independent variables are also called response and explanatory variables, respectively. The objective is to build a regression model that will enable us to adequately describe, predict, and control the dependent variable on the basis o
- Method of Linear Regression
- In the case that one believes that a series of two variables correlate linearly with each other, the method of least squares may be used to find the "best" straight line through the points. The method which follows assumes that one "knows" the variable on the x-axis more accurately than the variable on the y-axis. The y-axis variable is often referred to as the dependent variable and the x-axis variable the independent variable.
- Propagation of Uncertainty
- To calculate the overall uncertainty we included the uncertainty in the sample's mass and the uncertainty of the volumetric glassware. We did not consider other sources of uncertainty, including the purity of the Cu wire, the effect of temperature on the volumetric glassware, and the repeatability of our measurements. In this appendix we take a more detailed look at the propagation of uncertainty, using the standardization of NaOH as an example.