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This is when the population sampled is not exactly the population of interest.

E.g., If there was a questionnaire that's based on NZ women, the

population is focused on NZ WOMEN.

If the questionnaire was posted in a magazine, women are able to answer it EXCEPT this does not representthe population of NZ WOMEN

because only women who READ magazines could take part of the survey.

This is called selection bias in which only a sample of New Zealand Women participate in the survey which obviously does not represent a WHOLE POPULATION.

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Q: What is Selection bias in statistics?
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What is The strategy which is not aimed at reducing selection bias is?

the strategy that will not help reduce selection bias is:

What are the different types of bias in psychology?

Some types of bias in psychology include confirmation bias (favoring information that confirms existing beliefs), selection bias (nonrandom selection of participants), and observer bias (influencing research outcomes through expectations). It's important to be aware of these biases to ensure research findings are valid and reliable.

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Selection, choice

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To prevent bias

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Selection bias is a kind of error that occurs when the researcher decides who is going to be studied. It is usually associated with research where the selection of participants isn’t random. It is sometimes referred to as the selection effect. It is the distortion of statistical analysis, resulting from the method of collecting samples. If the selection bias is not taken into account, then some conclusions of the study may not be accurate.The types of selection bias include:Sampling bias: It is a systematic error due to a non-random sample of a population causing some members of the population to be less likely to be included than others resulting in a biased sample.Time interval: A trial may be terminated early at an extreme value (often for ethical reasons), but the extreme value is likely to be reached by the variable with the largest variance, even if all variables have a similar mean.

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Official statistics are more likely to be correct and upto date, however because it is government controlled they maybe bias or not showwing the simple data.

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What is seeking out only evidence that supports ones views and dismissing as unreliable statistics that contradict those views is known as?

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Sources of internal invalidity in research studies include confounding variables, selection bias, measurement bias, and researcher bias. These factors can affect the internal validity of the study results and make it difficult to draw accurate conclusions about the relationship between variables.