Sources of Error in Experiments
Biology ⇒ Scientific Inquiry and Experimental Design in Biology
Sources of Error in Experiments starts at 8 and continues till grade 12.
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See sample questions for grade 12
A biologist uses a pH meter that has not been calibrated for several months. What type of error is most likely to occur?
A researcher finds that all their measurements are consistently higher than the expected value. What should they check first?
A student consistently reads the meniscus from above rather than at eye level. What type of error does this introduce?
A student finds that their results are highly variable each time they repeat the experiment. What type of error is most likely present?
A biologist uses a pH meter that has not been calibrated for several months. What type of error is most likely to occur?
A researcher finds that all their measurements are consistently higher than the expected value. What should they check first?
A student consistently reads the meniscus from above rather than at eye level. What type of error does this introduce?
A student finds that their results are highly variable each time they repeat the experiment. What type of error is most likely present?
Which of the following best describes parallax error? (1) Error due to instrument calibration (2) Error caused by reading a measurement at an angle (3) Error from environmental changes (4) Error from sample contamination
Which of the following best describes the effect of random error on experimental data? (1) Shifts all data in one direction (2) Causes data to scatter around the true value (3) Makes data more accurate (4) Eliminates the need for controls
Which of the following is a method to reduce random error? (1) Calibrating instruments (2) Using a larger sample size (3) Using a control group (4) Blinding the experiment
Which of the following is a source of systematic error? (1) Faulty calibration of equipment (2) Human reaction time (3) Fluctuations in room temperature (4) Random sample variation
Fill in the blank: ________ error can be reduced by using standardized procedures and protocols.
Fill in the blank: ________ error is caused by unpredictable and uncontrollable variations in the experiment.
Fill in the blank: ________ error occurs when there is a consistent deviation in measurements due to a flaw in the experimental setup.
Fill in the blank: ________ errors can be minimized by calibrating instruments before use.
True or False: All errors in experiments can be completely eliminated with careful planning.
True or False: Environmental factors such as temperature and humidity can introduce errors in biological experiments.
True or False: Increasing the sample size in an experiment can help reduce the impact of random errors.
True or False: Random errors can be detected and corrected by calibration.
