Chapter 12.5, Problem 18HP

To determine

Describe each with example.

Answer to Problem 18HP

The data has right tailed longer than left tailed is known as positively skewed data.

The data has left tailed longer than right tailed is known as negatively skewed data.

The data distribution is symmetrical to left and right tailed is known as normally distributed data.

Explanation of Solution

Given information:

Positively skewed, negatively skewed and normally distributed sets of data.

Calculation:

The data has right tailed longer than left tailed is known as positively skewed data.

  

The data has left tailed longer than right tailed is known as negatively skewed data.

  $\begin{array}{l}stemleaf\\ \begin{array}{ccccc}1& 4& 0& & \\ 1& 5& 0& 0& \\ 0& 6& 1& 0& \\ 2& 7& 0& 0& 0\\ 4& 9& 0& 0& 0\\ 7& 1& 0& 0& \\ 3& 1& 1& 1& 1\end{array}\end{array}$

The data distribution is symmetrical to left and right tailed is known as normally distributed data.