15, 24,26,25,1,22,25,25,21,23Is the data set symmetrical positive or negative skew

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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15, 24,26,25,1,22,25,25,21,23
Is the data set symmetrical positive or negative skew

Expert Solution
Step 1

The given data set is 

15, 24,26,25,1,22,25,25,21,23

Step 2

Known Fact:

Shape of the distribution of a dataset:

The histogram of any dataset indicates the shape of the distribution of that particular dataset.

Using the histogram, shape of the distribution of any dataset is mainly classified into three ways as follows:

Symmetric:

If the left tail of the histogram is mirror image of the right tail histogram, then the data is said to be symmetrically distributed. That is, mean = median = mode.

Positively skewed:

If the right tail of the histogram is longer than the left tail of the histogram, then the data is said to be positively skewed. That is, mean > median > mode.

Negatively skewed:

If the left tail of the histogram is longer than the right tail of the histogram, then the data is said to be negatively skewed. That is, mean < median < mode.

Step 3

Procedure to find the histogram in MINITAB.

Statistics homework question answer, Step 3, Image 1
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