CLT Exam 1
Which of the following statements is true? - correct answer ✔At minimum
two levels of control should be tested daily for each test run in the laboratory.
When comparing an instrument to its peer group, which statistic provides the
most useful information regrind its ACCURACY - correct answer ✔SDI-
standard deviation index
When comparing an instrument to its peer group, which statistic provides the
most useful description of OVERALL IMPRECISION - correct answer ✔CVR
2(2s) - correct answer ✔Detects systematic error
1(3s) - correct answer ✔Detects rondom error
If the light source on an instrument is gradually weakening, it could contribute
to what type of error? - correct answer ✔Systematic error
If you change reagent on the instrument and your control results
demonstrates a sudden and consistent increase in value, this phenomena is -
correct answer ✔A shift in performance due to systematic error
If one of two control values within a single test run is between 2s and 3s on
the positive side, you should - correct answer ✔Accept the run if no error can
be detected
Dilution - correct answer ✔Decrease concentration by adding water/solvent
, Solute - correct answer ✔Substance being dissolved
Solvent - correct answer ✔The substance in which the solute dissolves in
Ratio - correct answer ✔Comparison of solute to solvent
Example of ratios to dilutions (3/27) - correct answer ✔Dilution- 1/9
Dilution factor- 9
Serum needed to make dilution- 1
Saline needed to make dilution- 8
Tube dilution - correct answer ✔Dilution ratio in that tube alone
Solution dilution - correct answer ✔Actual concentration of the solvent in
each tube (dependent on the previous dilutions)
Final concentration - correct answer ✔The solution dilution of the last tube
%w/w - correct answer ✔(Unit weights of solute = grams of solute) / (100 ml
of solution = 1dL of solution)
%w/v - correct answer ✔(Grams of solute = grams of solute) / (100 mL of
solution = 1 dL of solution)
%v/v - correct answer ✔(mL of concentration = mL of concentrate) / 100 mL
of solution = 1 dL of solution)
Which of the following statements is true? - correct answer ✔At minimum
two levels of control should be tested daily for each test run in the laboratory.
When comparing an instrument to its peer group, which statistic provides the
most useful information regrind its ACCURACY - correct answer ✔SDI-
standard deviation index
When comparing an instrument to its peer group, which statistic provides the
most useful description of OVERALL IMPRECISION - correct answer ✔CVR
2(2s) - correct answer ✔Detects systematic error
1(3s) - correct answer ✔Detects rondom error
If the light source on an instrument is gradually weakening, it could contribute
to what type of error? - correct answer ✔Systematic error
If you change reagent on the instrument and your control results
demonstrates a sudden and consistent increase in value, this phenomena is -
correct answer ✔A shift in performance due to systematic error
If one of two control values within a single test run is between 2s and 3s on
the positive side, you should - correct answer ✔Accept the run if no error can
be detected
Dilution - correct answer ✔Decrease concentration by adding water/solvent
, Solute - correct answer ✔Substance being dissolved
Solvent - correct answer ✔The substance in which the solute dissolves in
Ratio - correct answer ✔Comparison of solute to solvent
Example of ratios to dilutions (3/27) - correct answer ✔Dilution- 1/9
Dilution factor- 9
Serum needed to make dilution- 1
Saline needed to make dilution- 8
Tube dilution - correct answer ✔Dilution ratio in that tube alone
Solution dilution - correct answer ✔Actual concentration of the solvent in
each tube (dependent on the previous dilutions)
Final concentration - correct answer ✔The solution dilution of the last tube
%w/w - correct answer ✔(Unit weights of solute = grams of solute) / (100 ml
of solution = 1dL of solution)
%w/v - correct answer ✔(Grams of solute = grams of solute) / (100 mL of
solution = 1 dL of solution)
%v/v - correct answer ✔(mL of concentration = mL of concentrate) / 100 mL
of solution = 1 dL of solution)
