Outlier

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Outlier

A data point significantly different from others in the same set. An outlier is generally due to statistical noise and not to any fundamental difficulty with the data set. Taking the mean and median values of a data set can help reduce the influence of outliers. They are also called outlying observations.
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154), as was the main effect of percentage of outlying observations ([F.
00] by method of estimation and percent of outlying observations, averaged across the other study variables.
Outlying observations were not found in relation to the measured parameters and the distribution normality was not impaired.
The data analysed contained many outlying observations in terms of an unusual high value of standardised residual (13).
The estimation of the regression function values for the ranges is an iterative process with minimization of the influence of the most outlying observations (Matlab, 2005).
The equation explains about 70 per cent of labour demand over this period, with only a few outlying observations on the downside during the recessions of 1973-5 and 1981-2.