Chapter 11.1, Problem 15E

(a)

To determine

To find the outlier.

Answer to Problem 15E

62

It decreases the Mean.

Explanation of Solution

Given information: $455,262,471,358,364,553,62,351$

Calculation:

  $455,262,471,358,364,553,62,351$

The outlier is 62 as 62 is unusually far from the middle.

Hence,

In most cases, outliers have influence on mean, but not on the median, or mode.

So,

In this case, it decreases the Mean.

(b)

To determine

To explain the outlier.

Answer to Problem 15E

In most cases, outliers have influence on mean, but not on the median, or mode.

Explanation of Solution

Given information: $455,262,471,358,364,553,62,351$

Calculation:

An outlier is a value in a data set that is very different from the other values. That is, outliers are values unusually far from the middle. In most cases, outliers have influence on mean, but not on the median, or mode.