### How to get "mean" or "average" from image statistics?

Posted:

**2016-01-27T15:49:48-07:00**When I type:
I can see:
So I can see the "mean" calculated data: 254.996 (0.999983)

But when I type:
I get :

How can I get the correct result for the mean and what is its exact meaning?

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`identify -verbose 1.bmp`

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```
Channel statistics:
Pixels: 57600
Gray:
min: 0 (0)
max: 255 (1)
mean: 254.996 (0.999983)
standard deviation: 1.06249 (0.00416663)
kurtosis: 57595
skewness: -239.994
entropy: 0.000299591
Colors: 2
Histogram:
1: ( 0, 0, 0) #000000 gray(0)
57599: (255,255,255) #FFFFFF gray(255)
```

But when I type:

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`identify -format "%[mean]" 1.bmp`

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`65533.9`