TFSC Test Questions with Correct Answers Latest Update 2025-2026
What is the study of measurement? - Answers Metrology
What are the five principles of inquiry? - Answers 1. Pose a question
2. Does it link to relevant theories?
3. Use methods of direct investigation to question
4. Does it provide reasoning?
5. Is it empirical?
What is error? - Answers the difference between the experimental value and the accepted value
What is accuracy? - Answers how close a measurement is to the true value
What is uncertainty? - Answers Uncertainty is the doubt that exists about the result
What is precision? - Answers a measure of how close a series of measurements are to one another
What is repeatability? - Answers produces the same results every time
What is reproducability? - Answers Is when different people measure the same object and get a similar
answer
confidence level - Answers the estimated probability that a population parameter lies within a given
confidence interval
Tolerance - Answers The maximum acceptable difference between actual value and specified value
What are the six guiding principles of measurement? - Answers 1. The right measurement
2. The right tools
3. The right people
4. Have a regular review
5. Demonstrable consistency
6. The right procedure
What are factors that affect measurement? - Answers 1. Instruments
2. Object measured
3. Sampling process
, 4. Operator skill
5. Environmental factors
What are some uncertainty in measurements? - Answers Random and Systematic
Random - Answers by chance, not planned or prearranged; irregular
Sytematic - Answers The same influence affects other results
Prosecutor Fallacy - Answers The invalid interpretation of a valid static. Over valuing evidence
posterior probability - Answers the probability that a hypothesis is true after consideration of the
evidence
prior probability - Answers our initial belief about the probability of an outcome
defense fallacy - Answers Under-valuing evidence
False-positive probability - Answers Prior probability declaring a match falsely
You should always disclose (3 things) - Answers Exculpatory, Impeachment, or Mitigating documents
What is the problem with bad apples? - Answers It lacks explanatory power
incidents - Answers unplanned or planned interruption of a service
Unit failure - Answers Output of a unit (section) is misleading
System failure - Answers Failure of one or more units that leads to a false conviction
Josiah Sutton Case - Answers 1. Deals with confirmation bias
2. Eyewitness testimony was trash
What is there a violation of due-process? - Answers When chain of custody is broken or Brady MMA is
broken
CSI effect - Answers the influence that crime shows such as CSI have on the public's perception (Jury) of
forensic science.
Melendez-Diaz v. Massachusetts - Answers Case said that the defendant has the right to question the
forensic analyst if they so desire
voir dire - Answers a preliminary examination of a witness or a juror by a judge or counsel.
Contingency Fees - Answers Are prohibited
Who is responsible to making sure a expert witness is qualified? - Answers The proffering attorney
What is the study of measurement? - Answers Metrology
What are the five principles of inquiry? - Answers 1. Pose a question
2. Does it link to relevant theories?
3. Use methods of direct investigation to question
4. Does it provide reasoning?
5. Is it empirical?
What is error? - Answers the difference between the experimental value and the accepted value
What is accuracy? - Answers how close a measurement is to the true value
What is uncertainty? - Answers Uncertainty is the doubt that exists about the result
What is precision? - Answers a measure of how close a series of measurements are to one another
What is repeatability? - Answers produces the same results every time
What is reproducability? - Answers Is when different people measure the same object and get a similar
answer
confidence level - Answers the estimated probability that a population parameter lies within a given
confidence interval
Tolerance - Answers The maximum acceptable difference between actual value and specified value
What are the six guiding principles of measurement? - Answers 1. The right measurement
2. The right tools
3. The right people
4. Have a regular review
5. Demonstrable consistency
6. The right procedure
What are factors that affect measurement? - Answers 1. Instruments
2. Object measured
3. Sampling process
, 4. Operator skill
5. Environmental factors
What are some uncertainty in measurements? - Answers Random and Systematic
Random - Answers by chance, not planned or prearranged; irregular
Sytematic - Answers The same influence affects other results
Prosecutor Fallacy - Answers The invalid interpretation of a valid static. Over valuing evidence
posterior probability - Answers the probability that a hypothesis is true after consideration of the
evidence
prior probability - Answers our initial belief about the probability of an outcome
defense fallacy - Answers Under-valuing evidence
False-positive probability - Answers Prior probability declaring a match falsely
You should always disclose (3 things) - Answers Exculpatory, Impeachment, or Mitigating documents
What is the problem with bad apples? - Answers It lacks explanatory power
incidents - Answers unplanned or planned interruption of a service
Unit failure - Answers Output of a unit (section) is misleading
System failure - Answers Failure of one or more units that leads to a false conviction
Josiah Sutton Case - Answers 1. Deals with confirmation bias
2. Eyewitness testimony was trash
What is there a violation of due-process? - Answers When chain of custody is broken or Brady MMA is
broken
CSI effect - Answers the influence that crime shows such as CSI have on the public's perception (Jury) of
forensic science.
Melendez-Diaz v. Massachusetts - Answers Case said that the defendant has the right to question the
forensic analyst if they so desire
voir dire - Answers a preliminary examination of a witness or a juror by a judge or counsel.
Contingency Fees - Answers Are prohibited
Who is responsible to making sure a expert witness is qualified? - Answers The proffering attorney
