, accuracy - ANSWER-closeness of the mean to the "true value"
precision - ANSWER-reproducibility of individual measurements
Uncertainty in Addition/Subraction - ANSWER-e=sqrt(ex1^2+ex2^2+ex3^2+...)
Uncertainty in Multiplication/Division -
ANSWER-e=y*sqrt((ex1/x1)^2+(ex2/x2)^2+(ex3/x3)^2+...)
T-test case 1 equation - ANSWER-true value= mean (+-) (time*standard
deviation)/sqrt(number of measurements))
T-test case 1 Tcalc= - ANSWER-(sqrt(n)Iknown value-calculated meanI)/standard
deviation
For Case 1:
If Tcalc>Ttable - ANSWER-the actual value isn't in the range and it is bad
For Case 1:
If Tcalc<Ttable - ANSWER-the actual value is close to our calculated value
For Case 2:
you need to first solve for Fcalc= - ANSWER-(larger standard deviation)^2/(smaller
standard deviation)^2
Significant Figures in Logarithms and antilogarithms - ANSWER-the number of
significant figures in the log should equal the number of digits in the mantissa
How many significant figures in log(205.5) - ANSWER-four significant figures, so you
will need four decimal places in your answer
pH - ANSWER--log[H3O+]
[H3O+] - ANSWER-10^-pH
Absorbance - ANSWER--log(transmittance)
Random Error - ANSWER--repeated measurements are sometimes high and
sometimes low
-cannot be corrected for
Systematic Error - ANSWER--repeated measurements are usually always high or
always low
-can and should be corrected for
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