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Many reasons. See Wikipedia under outliers: Outliers can have many anomalous causes. A physical apparatus for taking measurements may have suffered a transient malfunction. There may have been an error in data transmission or transcription. A sample may have been contaminated with elements from outside the population being examined. Alternatively, an outlier could be the result of a flaw in the assumed theory, calling for further investigation by the researcher. According to Wikipedia, an outlier in statistics is a number that is numerically distant to other numbers. Thus, it is not necessarily an incorrect data point, but one that requires extra scrutiny. A value that is observed and noted manually, can often be incorrectly recorded. As stated above, a transcription error creates an outlier.
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How do you use the word outlier in a sentence?
An outlier is an outlying observation that appears to deviate markedly from the other members of a given sample. Outliers can occur by chance.
How does the outlier effect the data?
Outlier: an observation that is very different from the rest of the data.How does this affect the data: outliers affect data because it means that your calculations might be off which makes it a possibility that more than the outlier is off.
Would a mean be smaller or larger if you leave out an outlier?
Depends on whether the outlier was too small or too large. If the outlier was too small, the mean without the outlier would be larger. Conversely, if the outlier was too large, the mean without the outlier would be smaller.
How do you determine how the outlier affects the mean median mode and range?
Calculate the mean, median, and range with the outlier, and then again without the outlier. Then find the difference. Mode will be unaffected by an outlier.
What is an example of a outlier range?
1,2,3,4,20 20 is the outlier range
