Admin Table of Contents
How can you prevent anomalous results?
If you have repeated your experiment several times, you will usually find fewer anomalous results than if you carry it out only once.
How can I improve my anomalous results?
Taking many repeat measurements or having a large sample size to analyse will improve accuracy. Anomalous results can be easily spotted in the data and discarded, leading to a more accurate calculation of the mean. Look at the following six results taken by a student.
How do anomalies affect data?
An anomalous result is one which stands out very obviously from the rest of the figures simply because it breaks the pattern all the other figures have fallen into. This anomalous figure may have a large effect on the range or average and could disrupt the overall results.
How do you make results more reliable in biology?
You can increase the validity of an experiment by controlling more variables, improving measurement technique, increasing randomization to reduce sample bias, blinding the experiment, and adding control or placebo groups.
What are two possible reasons for the anomalous result?
There are many possible explanations for obtaining anomalous results. Human errors can lead to data which is anomalous and a lack of precision whilst taking measurements is one possible explanation. Using inappropriate measuring equipment could create problems too.
What is the use of control experiment?
Scientists use controlled experiments because they allow for precise control of extraneous and independent variables. This allows a cause and effect relationship to be established. Controlled experiments also follow a standardised step by step procedure. This makes it easy another researcher to replicate the study.
What could have caused an anomalous result?
What two techniques would you use to find all the anomalies in the data?
Anomaly Detection Techniques
- Simple Statistical Methods.
- Challenges.
- Density-Based Anomaly Detection.
- Clustering-Based Anomaly Detection.
- Support Vector Machine-Based Anomaly Detection.
How can you improve reliability in an experiment?
Implementing a method that reduces random errors will improve reliability. However, the entire result of the experiment can be improved through repetition and analysis, as this may reduce the effect of random errors.
How can you improve precision in an experiment?
You can increase your precision in the lab by paying close attention to detail, using equipment properly and increasing your sample size. Ensure that your equipment is properly calibrated, functioning, clean and ready to use.