ENGTECH 1AC3 Study Guide - Midterm Guide: Variance, Null Hypothesis, Direct Comparison Test
10 Feb 2014
School
Department
Course
Professor
Document Summary
) is called the population mean, ( ) and if it is in the. If n is large then the mean ( absence of errors then or the population mean is called the true result. Mean deviation (d) = average value of result mean result. Detailed results show that when we calculate the standard deviation, we can predict the following if the result is repeated many times; 68% of results will be within 1 of the mean. 96% of results will be within 2 of the mean. 99. 7 of results will be within 3 of the mean. ) and the standard deviation ( or s) values apply to the numerical value of the. 1l = 1000ml = 1000g = 1000000 mg - (mass of solute(mg) / 106 mg solution = ppm. Error caused by buoyancy is < 0. 1% for objects with density > 2g/cm2. A 25ml pipet delivers 24. 976 g of water weighed against steel mass at 25 c.
