What happens when other scientists get different results when repeating an experiment?

Replication. Once we have repeated our testing over and over, and think we understand the results, then it is time for replication. That means getting other scientists to perform the same tests, to see whether they get the same results. … Those different results give us a chance to discover more about our idea.

What happens when you repeat an experiment?

To repeat an experiment, under the same conditions, allows you to (a) estimate the variability of the results (how close to each other they are) and (b) to increase the accuracy of the estimate (assuming that no bias – systematic error – is present). … These are the 2 reasons for the repetition of one experiment.

Why might a scientist repeat an investigation and not get the same results?

You thought you were diligent, careful, and thorough, but there must be something wrong somewhere because you got something different every time. There are two main reasons your results may not be consistent: error and uncontrolled conditions.

What happens when the results of a scientific investigation are not replicable?

Scientists aim for their studies to be replicable — meaning that another researcher could perform a similar investigation and obtain the same basic results. When a study cannot be replicated, it suggests that our current understanding of the study system or our methods of testing are insufficient.

Why do scientists repeat the experiments of other scientists?

Why is the ability to repeat experiments important? Replication lets you see patterns and trends in your results. This is affirmative for your work, making it stronger and better able to support your claims.

Why is it important to take repeat readings?

Repeated reading usually leads to better reading performance. The biggest payoffs tend to be with word reading, but it also has been found to improve oral reading fluency and reading comprehension (the most frequently reported area of improvement).

Why is it important that scientific results can be replicated?

When studies are replicated and achieve the same or similar results as the original study, it gives greater validity to the findings. If a researcher can replicate a study’s results, it means that it is more likely that those results can be generalized to the larger population.

Should experiments be repeated over and over to see if the results are the same each time?

Experiments should be repeated to see if the same results are obtained each time. This gives validity to the test results.

What is the difference between replication and repetition?

Repetition is the “repeating“ (multiple trials) of your own investigation for accuracy. Replication occurs when the investigation is “replicated” or copied by a different investigator.

What is the advantage of repeating an experiment several times?

Repeating an experiment more than once helps determine if the data was a fluke, or represents the normal case. It helps guard against jumping to conclusions without enough evidence. The number of repeats depends on many factors, including the spread of the data and the availability of resources.

Why is it necessary to repeat an experiment several times to accurately test a hypothesis?

It is important for scientists to do repeated trials when doing an experiment because a conclusion must be validated. True because the results of each test should be similar. Other scientists should be able to repeat your experiment and get similar results. … The only way to test a hypothesis is to perform an experiment.

Does repeating an experiment increase accuracy or precision?

Errors related to accuracy are typically systematic. Uncertainties related to precision are more often random. Therefore, repeating an experiment many times can improve the precision of experimental measurements via statistical averaging, but will not affect the accuracy, since systematic errors never “average away”.

Why is communicating the results of an experiment important?

It is important to share what you have learned with others. Scientists often find solutions to problems by knowing the results of other scientists’ experiments. Communicating your results is often the first step to clearly identifying a problem and beginning to think about possible solutions.

How does repetition increase reliability?

You can test reliability through repetition. The more similar repeated measurements are, the more reliable the results. However, repetition alone doesn’t make your measurements reliable, it just allows you to check whether or not they are reliable. Improving reliability is a different matter to testing it.

How can you improve validity of an investigation?

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.

How do you make results more reliable?

Accuracy can be improved by using a syringe to measure liquids rather than a measuring cylinder. Reliability can be improved by completing each temperature more than once and calculating an average.

How do you achieve validity and reliability in research?

How to ensure validity and reliability in your research. The reliability and validity of your results depends on creating a strong research design, choosing appropriate methods and samples, and conducting the research carefully and consistently.

What is validity science?

Validity is a holistic evaluation of scientific investigations and relies on all aspects of investigations to be accurate or precise and reliable. … For example, ‘accuracy’, ‘precision’ and ‘internal reliability’ are used interchangeably.

Why is it important to make sure that your research instrument provides consistent results?

The purpose of establishing reliability and validity in research is essentially to ensure that data are sound and replicable, and the results are accurate. The evidence of validity and reliability are prerequisites to assure the integrity and quality of a measurement instrument [Kimberlin & Winterstein, 2008].

What is the type of validity when an instrument produces results similar?

Concurrent validity is demonstrated when two assessments agree or a new measure is compared favorably with one that is already considered valid.

What does validity mean in research?

STUDY VALIDITY

The validity of a research study refers to how well the results among the study participants represent true findings among similar individuals outside the study.