wordarrieta wordarrieta
  • 14-02-2019
  • Mathematics
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Compared to others, which one of the following is not robust to outliers? a) Mean b) Median c) Mode d) 50th percentile

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Аноним Аноним
  • 14-02-2019

Answer:

The mean.

Step-by-step explanation:

The mean is not robust.

The presence of an outlier greatly affects the value of a mean.

An example will illustrate this.

Find the mean of  the numbers   2  3  5  6  34.

34 is an outlier. The mean = (2+3+5+6+34) / 5 = 10.

Now   if we replace the outlier with a number closer to the others:

Say we have 2 3 5 6 8 :

The mean = (2+3+5+6+8) / 5 =  4.8 which is a much truer measure of centrality than 10.

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