Term

Definition
procedural variations, instrument precision, human errors 


Term
Most random sample variability will follow a _____ distribution. 

Definition


Term
___% of the data will fall within the one standard deviation of the mean. 

Definition


Term
___% will fall within 2 standard deviations of the mean 

Definition


Term

Definition
Third momentum about the mean of a sample 


Term

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

Definition
A measure of repeatability 


Term

Definition
diff between th etrue value of a measured quantity and the measurment 


Term

Definition
Smallest interval measurable by an instrument 


Term

Definition
Combined accuracy of a measurment and the datum 


Term

Definition
Accuracy controlled by the precision of the measurement 


Term

Definition
Errors caused by carlessness of observer. 


Term

Definition
errors of constant magnitude and sign. Usually caused by iproper calibration of the instrument. Sometimes be eliminated 


Term

Definition
Errors of varying mangitude but constant sign. 


Term

Definition
Errors of varying magnitude and sign but obeying some systematic law. 


Term

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

Definition
elongation per length of sample 


Term

Definition


Term

Definition
value of sample where .5 of sample is greater and .5 is less than 


Term

Definition
a number that is likely to be correct 


Term

Definition
objective, scope of work, results, conclusion 

