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Details Title: BAE 1022 Description: Final Exam Total Flash Cards: 23 Created: 05/03/2006 16:35:46	To study from this set of flash cards, or to create your own your own study flash cards, register HERE. If you are already a registered user, CLICK HERE.
Cards Term 3 experimental errors Definition procedural variations, instrument precision, human errors Term Most random sample variability will follow a _____ distribution. Definition Normal distribution Term ___% of the data will fall within the one standard deviation of the mean. Definition 68% Term ___% will fall within 2 standard deviations of the mean Definition 95% Term Skew Definition Third momentum about the mean of a sample Term Kurtosis Definition Fourth moment about the mean of a sample. measure of the peakedness of the distribution (Normal = 3, less than - flat, more than - pointy) Term precision Definition A measure of repeatability Term accuracy Definition diff between th etrue value of a measured quantity and the measurment Term Resolution Definition Smallest interval measurable by an instrument Term Absolute Accuracy Definition Combined accuracy of a measurment and the datum Term Relative Accuracy Definition Accuracy controlled by the precision of the measurement Term Blunders Definition Errors caused by carlessness of observer. Term Bias or Constant Errors Definition errors of constant magnitude and sign. Usually caused by iproper calibration of the instrument. Sometimes be eliminated Term Systematic Errors Definition Errors of varying mangitude but constant sign. Term Periodic Errors Definition Errors of varying magnitude and sign but obeying some systematic law. Term Random errors Definition errors of varying sign and magnitude, and do not obey a systematic law Term Treatment of Bias and Systematic Errors Definition elimintaed where possible by careful calibration and observational procedures. Term Treatment of Periodic and Random Errors Definition Taking the mean of repeated observation. Term strain Definition elongation per length of sample Term stress Definition force or load per area Term median Definition value of sample where .5 of sample is greater and .5 is less than Term sig fig Definition a number that is likely to be correct Term 4 parts to the abstract Definition objective, scope of work, results, conclusion