Histogram and saturation in Photoshop

1. Photoshop histogram panel is the average of the color intensity of the selected areas and layers of color channel statistics mean?
2. In the Photoshop histogram panel do you mean the average of the brightness of the image luminance channel?
I represent the average value of the maximum to the average of brightness from 0 to 255?
3. To obtain the saturation current number of images should I use any method or menu or panel?
I would appreciate a response.
Mail: [email protected]

Not sure I follow all the details you mention.
Hope this helps:
Photoshop Help | Viewing histograms and pixel values

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Histogram and saturation in Photoshop

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