Podcast
Questions and Answers
What is the variable that is selected by the investigator and changed in an experiment?
What is the variable that is selected by the investigator and changed in an experiment?
Independent variable
What is the variable that is measured in an experiment?
What is the variable that is measured in an experiment?
Dependent variable
What are variables that are kept constant during an experiment to ensure a fair test called?
What are variables that are kept constant during an experiment to ensure a fair test called?
Controlled variables
What term describes the maximum and minimum values of the independent or dependent variables in an experiment?
What term describes the maximum and minimum values of the independent or dependent variables in an experiment?
What is a conclusion based on valid data obtained from an appropriate experimental design called?
What is a conclusion based on valid data obtained from an appropriate experimental design called?
What term describes the suitability of an investigative procedure to answer the question being asked in an experiment?
What term describes the suitability of an investigative procedure to answer the question being asked in an experiment?
What is the smallest change in the quantity being measured by an instrument that can be observed?
What is the smallest change in the quantity being measured by an instrument that can be observed?
What is a value in a set of results that seems out of place, especially within repetitions?
What is a value in a set of results that seems out of place, especially within repetitions?
What is the value that would be obtained in an ideal measurement, free from errors?
What is the value that would be obtained in an ideal measurement, free from errors?
What is the interval within which the true value can be expected to lie, expressed as a range around the measured value?
What is the interval within which the true value can be expected to lie, expressed as a range around the measured value?
What is the difference between a measured value and the true value?
What is the difference between a measured value and the true value?
What type of error causes readings to differ from the true value by a consistent amount each time a measurement is made and can be influenced by the environment, methods of observation, or the instruments used?
What type of error causes readings to differ from the true value by a consistent amount each time a measurement is made and can be influenced by the environment, methods of observation, or the instruments used?
What type of error occurs due to results varying in an unpredictable way from one measurement to the next and can be reduced by taking more measurements and calculating a mean?
What type of error occurs due to results varying in an unpredictable way from one measurement to the next and can be reduced by taking more measurements and calculating a mean?
What term describes a measurement result that is judged to be close to the true value?
What term describes a measurement result that is judged to be close to the true value?
What term describes the closeness of agreement between measured values, regardless of how close they are to the true value?
What term describes the closeness of agreement between measured values, regardless of how close they are to the true value?
What is the precision obtained when repeat readings are obtained by a single learner or group called?
What is the precision obtained when repeat readings are obtained by a single learner or group called?
What is the precision obtained when repeat readings are obtained by different learners or groups called?
What is the precision obtained when repeat readings are obtained by different learners or groups called?
What term describes a measurement that is reproducible if repetition by different learners or groups obtains the same or similar results?
What term describes a measurement that is reproducible if repetition by different learners or groups obtains the same or similar results?
What is a chemical or piece of apparatus that could cause harm, often specified in risk assessments, called?
What is a chemical or piece of apparatus that could cause harm, often specified in risk assessments, called?
What is an action involving a hazard that might result in danger called?
What is an action involving a hazard that might result in danger called?
What are actions taken to reduce or prevent a risk while allowing you to carry out an experiment called?
What are actions taken to reduce or prevent a risk while allowing you to carry out an experiment called?
Flashcards
Independent variable
Independent variable
The variable that is changed by the experimenter.
Dependent variable
Dependent variable
The variable that is measured in response to changes in the independent variable.
Controlled variable
Controlled variable
A variable that is kept constant throughout an experiment to ensure a fair test.
Range
Range
Signup and view all the flashcards
Valid conclusion
Valid conclusion
Signup and view all the flashcards
Validity of experimental design
Validity of experimental design
Signup and view all the flashcards
Resolution
Resolution
Signup and view all the flashcards
Anomaly
Anomaly
Signup and view all the flashcards
True value
True value
Signup and view all the flashcards
Uncertainty
Uncertainty
Signup and view all the flashcards
Measurement error
Measurement error
Signup and view all the flashcards
Systematic error
Systematic error
Signup and view all the flashcards
Random error
Random error
Signup and view all the flashcards
Accuracy
Accuracy
Signup and view all the flashcards
Precision
Precision
Signup and view all the flashcards
Repeatability
Repeatability
Signup and view all the flashcards
Reproducibility
Reproducibility
Signup and view all the flashcards
Reproducible
Reproducible
Signup and view all the flashcards
Hazard
Hazard
Signup and view all the flashcards
Risk
Risk
Signup and view all the flashcards
Control Measures
Control Measures
Signup and view all the flashcards
Study Notes
Independent Variable
- The variable chosen by the researcher.
Dependent Variable
- The variable measured in response to the independent variable.
Controlled Variable
- A variable that is kept constant to ensure a fair test.
Range
- The maximum and minimum values of the independent or dependent variables.
Valid Conclusion
- A conclusion supported by valid data from an appropriate experimental design.
Validity of Experimental Design
- The suitability of the experimental procedure for answering the research question. Strategies include fair tests and controls to isolate the independent variable's effect.
Resolution
- The smallest measurable change in a quantity, as indicated by the measuring instrument. For example, ± 1mm on a 1m ruler. .
Anomaly
- An outlier or unexpected result in a data set. Often appears out of place compared to other repetitions.
True Value
- In an ideal measurement, the value that would be obtained.
Uncertainty
- The interval within which the true value is expected to lie. Expressed as ± a value. For example, "the temperature is 20°C ±2°C."
Measurement Error
- The difference between a measured value and the true value.
Systematic Error
- Errors that cause consistent deviations from the true value each time a measurement is made, e.g., environmental factors or faulty instruments. Cannot be reduced by multiple trials.
Random Error
- Errors that cause unpredictable variations in results from one measurement to the next. Can be reduced by repeating measurements and averaging.
Accuracy
- How close a measurement is to the true value.
Precision
- How close repeated measurements are to each other.
Repeatability
- The precision obtained when repeat readings are taken by the same person or group.
Reproducibility
- The precision obtained when repeat readings are taken by different people or groups.
Reproducible
- A measurement is reproducible if different people or groups obtain similar results.
Hazard
- A chemical or piece of apparatus that could cause harm.
Risk
- An action involving a hazard that might result in danger.
Control Measures
- Actions taken to reduce or prevent risks while allowing the experiment to proceed.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
This quiz focuses on key concepts related to experimental design, including independent and dependent variables, as well as controlled variables. Test your knowledge on terms like validity, resolution, and anomalies to deepen your understanding of scientific research methods.
