0
a particular tendency, trend, inclination, feeling, or opinion, especially one that is preconceived or unreasoned
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
In critical thinking what does bias mean?
bias - favouring one point of view.
How is it that a random samples gives a fairly accurate representation of public opinion?
The main point here is that the Sample Mean can be used to estimate the Population Mean. What I mean by that is that on average, the Sample Mean is a good estimator of the Population Mean. There are two reasons for this, the first is that the Bias of the estimator, in this case the Sample Mean, is zero. A Bias other than zero overestimates or underestimates the Population Mean depending on its value. Bias = Expected value of estimator - mean. This can be expressed as EX(pheta) - mu (pheta) As the Sample Mean has an expected value (what value it expects to take on average) of itself then the greek letter mu which stands for the Sample Mean will provide a Bias of 0. Bias = mu - mu = 0 Secondly as the Variance of the the Sample Mean is mu/(n-1) this leads us to believe that the Variance will fall as we increase the sample size. Variance is a measure of the dispersion of values collected from the centre of the data. Where the centre of the data is a fixed value equal to the median. Put Bias and Variance together and you get the Mean Squared Error which is the error associated with using an estimator of the Population Mean. The formula for Mean Squared Error = Bias^2 + Variance With our estimator we can see that as the Bias = zero, it has no relevance to the error and as the variance falls as the sample size increases then we can conclude that the error associated with using the sample mean will fall as the sample size increases. Conclusions: The Random Sample of public opinon will on average lead to a true representation of the Population Mean and therefore the random samle you have will represnt the public opinion to a fairly high degree of accuracy. Finally, this degree of accuracy will rise incredibly quickly as the sample size rises thus leading to a very accurate representation (on average)
What is the difference between the sample mean and the population mean known as?
Sampling bias.
What does bias and unbiased mean?
something different to other things
What is does mean bias?
Bias means weight in a ball that causes it to swerve, as in bowling. It also means an unfair act or policy stemming from prejudice.
Why do scientists define systems?
it minimizes sources of bias in the data
What is intentional Bias?
Unintentional bias means the source of the bias is in the data collection or sampling method. Its not done purposefully, but rather ignorantly.
How does bias in the data affect experimental result?
Bias in the data is inaccurate data. Any error in data will yield false results for the experiment. Experiments by their nature must be exact. Many trials are not accepted until the results can be duplicated.
Why is being able to recognize bias when it is present such a vital skill?
In statistics a bias is systematicÊasÊopposedÊtoÊaÊrandomÊdistortion ofÊaÊstatisticÊasÊaÊresultÊofÊsamplingÊprocedure. It is a vital skill to identify a bias because represent distortion of data.
A system of gathering data so that bias and error in measurement are reduced is called the?
The scientific system of gathering data with bias and error in measurement are reduced in psychology.
Is defined as systematic error in the collection or interpretation of epidemiologic data?
bias
In critical thinking what does bias mean?
bias - favouring one point of view.
What is mean by forward bias?
what is mean by forward bia
What is a built in bias?
what does this word mean built in bias in this sentence? Does this individual have affiliations that might create a built in bias toward this information
Which data collection method is not subject to non response bias?
experimental method
What term is fedined as anything that can distort data and lead to inaccurate conclusions?
bias
What system is used for reducing bias and error in the measurement of data?
Scientific method
