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How does sample size affect the validity of an experiment?
The sample size has no effect on the validity of an experiment: instead, it is the experimental procedure and integrity of the experimenters.The sample size can affect conclusions that may be drawn from an experiment. The larger the sample is, the more reliable these conclusions are.
What kind of validity does the strategy of random sampling increase?
Random Sampling increases the reliability and validity of your research findings. To begin with, Reliability: By randomly picking research participants, the likelihood that they are from different backgrounds/ have different experiences etc. is higher and hence, they are said to be more representative of the population of interest. EG: RQ: Do females have higher IQ? A case of random sampling will pick females who are housewives/ CEOs/ Indian/ 18yrs old/ Divorced etc. the list goes on. While a case of non-random sampling (such as picking participants at a bus stop) may only result in a sample of females who are 20 - 35 years old, working professionals. Validity: As reliability and validity are related, for the research findings to be reliable and generalizable to the population of interest, it first has to be a valid sample. Hence, from the above example, EG1 provides a valid sample, while EG2 is invalid.
What is he conclusion from research conducted on a sample population to the population as a whole?
Assuming that the population was carefully defined, the sample population was carefully and correctly chosen, and that there were significant results, then the implication is that the results of the study, within the confidence limits indicated, hold true for the population at large.
What is the smallest sample size in research technique?
One.
Which of these best describes why it is so important to have a representative sample?
To generalize results from the sample population to the target population.
How does sample size affect the validity of an experiment?
The sample size has no effect on the validity of an experiment: instead, it is the experimental procedure and integrity of the experimenters.The sample size can affect conclusions that may be drawn from an experiment. The larger the sample is, the more reliable these conclusions are.
What is the differences between external and internal validity in research?
Internal validity has to do with the accuracy of the results. Results could be inaccurate if samples are not selected randomly. External validity has to do with the generalizability of the findings to the population. If the sample selected is only Hispanics under the age of 25, then it would be hard to generalize the results to the entire US population.
How does sample size affect the experiment?
The sample size determines the accuracy of results in an experiment
How will you ensure validity and reliability of data?
To ensure validity and reliability of data, market researchers can present the same surveys to different respondents within the same sample area. Using a wider sample area will also give a true picture of the results.
What does generalizability mean?
Generalizability refers to the extent to which research findings can be applied or extended to other populations, settings, or times. It is important for determining the external validity and relevance of a study's results beyond the specific conditions of the research.
Why is it not recommended to leave an oven-dried sample in the open air for a long time before measuring its dry weight?
Leaving an oven-dried sample in the open air for a long time can lead to reabsorption of moisture from the environment, leading to an increase in the sample's weight. This can result in inaccurate measurements of the sample's dry weight and affect the validity of the experiment's results.
What can affect the results of saliva sample testing?
Smoking, eating, drinking, and brushing the teeth can affect test results, as can the way in which the person puts saliva on the slide.
When you question whether ancecdotal evidence can be generalized to all people you are applying?
the concept of generalizability, which refers to the extent to which findings or conclusions from a study can be applied to a larger population beyond the sample studied. This is an important consideration in research to determine the external validity of the results.
What is least likely to affect the validity of a public opinion poll or survey?
The size of the survey sample is least likely to affect the validity of a public opinion poll or survey, as long as it is conducted randomly. Other factors, such as biased questioning, nonresponse rate, or sampling method, are more likely to impact validity.
What is a sentence with skewed in it?
The results of the study were skewed because of the small sample size used in the research.
How might choosing a small sample size affect a scientific investigation?
Statistically the results will not be scientifically valid if the sample size is too small.
Why would it be important to consider selection attrition and history?
Considering selection, attrition, and history is important because they can impact the validity and generalizability of research findings. Selection bias can affect the representativeness of the sample, attrition can lead to missing data and potential bias, and history can confound the results by external events occurring during the study period. By addressing these factors, researchers can improve the rigor and reliability of their findings.
