Uncertainty & Graphs PowerPoint

Communicating Uncertainty in Measurement Limit of Precision What is the smallest increment on the measuring tool? 1 mL LOP is +/- 1 mL Uncertainty How many significant figures can your measuring tool allow you? 36.5 mL (3 sig figs) Uncertainty is +/- 0.1 mL

By the way…

Each tool below has a different uncertainty of measurement Each tool below has a different uncertainty of measurement. State how many significant figures there are for each one, and state the limit of precision (LOP) for each one. 10 mL 0.1 mL 1 mL 2 sf 3 sf 4 sf

DISCUSS: How are the LOP and Uncertainty related?

Determine the measurement in cm communicated by each ruler, and determine the uncertainty.

Making a proper Graph Every graph MUST HAVE: a Title (with the manipulated and responding variable) label x-axis with the manipulated variable & units label y-axis with the responding variable & units data points plotted a line of best fit

Make a graph from the following Data Table

Slope & Y-intercept 5.0 g/cm3 Slope = y2 – y1 WHAT IS THE SLOPE OF THE GRAPH x2 – x1 YOU CREATED? Show your work. 100.0 g – 30.0 g 20.0 cm3 – 6.0 cm3 *in a Mass vs. Volume graph, the slope is equal to the density Y-intercept = when the line crosses through the y-axis; when x = 0 *in the case of a Mass vs. Volume graph… can something that has 0 g of mass still have volume? http://www.purplemath.com/modules/slopyint.htm 5.0 g/cm3 =