Precision & Accuracy Precision –How close are the measurements to each other? –Reproducibility Accuracy – How close is a measurement to the true value?
Ch. 1, Physics & Measurement. 1. Physics is an experimental science Measurements Units 2. Physics is a quantitative science Mathematics Algebra.
Scientific Notation. Practice Quiz Put the following in order from smallest to largest. 1.8x10 -5 8.7x10 24 0.7x10 -3 1.4x10 40.
Accurate measurements are needed for a valid experiment.
Working with Significant Figures. Exact Numbers Some numbers are exact, either because: We count them (there are 14 elephants) By definition (1 inch =
Review of General Chem Scientific Method Metric System Uncertainty Dimensional Analysis.
Chirp! Chirp! Welcome! Instructor: Anne Yu [email protected]@pomona.edu, SN 109, x74252 Lab Assistant: Jane Xu ‘12.
RECONCILING THE VALUE ESTIMATES Chapter 15. Consistency Evaluate the approaches Evaluate the data Range of values Reconciliation Rounding the answer Significant.
Scientific Notation
Uncertainty in Measurements: Using Significant Figures & Scientific Notation Unit 1 Scientific Processes Steinbrink.
RECONCILING THE VALUE ESTIMATES
