variability and do not necessarily represent real features of the underlying parameters. 4 Discussion It is standard in applied statistics to evaluate inferences based on their statistical **significance** atthe5%level.

The Difference Between "**Significant**"and"Not **Significant**"is not Itself Statistically **Significant** Andrew GELMAN and Hal S TERN It is common to summarize statistical comparisons by declara-tionsof statistical **significance** or nonsignificance.

The Qualitative Report Volume 9 Number 4 December 2004 770-792 http://www.nova.edu/ssss/QR/QR9-4/onwuegbuzie.pdf Enhancing the Interpretation of "**Significant**" Findings: The Role of Mixed Methods Research Anthony J. Onwuegbuzie University of South Florida, Sarasota, Florida Nancy L. Leech ...

Precision, Accuracy, and **Significant** Figures No measurement of a physical quantity is absolutely certain . In other words, all measurements include a degree of uncertainty .

APTI 435: ATMOSPHERIC SAMPLING COURSE G-1 **Significant** Figures and Rounding Off 1 G.1 Working with Numbers In most cases, rather than using paper and pencil, you will be performing math calculations using a handheld calculator, a personal computer, or a mainframe computer.

Name Date Class 1 of 13 CHEMFILE MINI-GUIDE TO PROBLEM SOLVING CHAPTER 2 **Significant** Figures A lever balance used to weigh a truckload of stone may be accurate to the nearest 100 kg, giving a reading of 15 200 kg, for instance.

CHMY 121-Intro to GeneralChemistry MSU-Great Falls College of Technology **Significant** Figures **Significant** figures also al led"sig. figs. ") provide an indication of how precisely number is known.

Following are Summaries from Two Chemistry Education Web Sites Concerning **Significant** Figure Rules **Significant** Figure Rules

**SIGNIFICANT** FIGURES N UMERICAL DATA that are used to record observations or solve problems are seldom exact. The numbers are generally rounded off and, consequently, are estimates of some true value, and the mathematical operations or assumptions involved in the calculations commonly are ...

**Significant** Figures in Measurement and Calculations A successful chemistry student habitually labels all numbers, because the unit is important.