What is the full form for PDF, a fundamental descriptor of random variables i.e. gray values in an image?

What is the full form for PDF, a fundamental descriptor of random var

1.	What is the full form for PDF, a fundamental descriptor of random variables i.e. gray values in an image?
A.	Pixel distribution function
B.	Portable document format
C.	Pel deriving function
D.	Probability density function
Answer» E.

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What is the full form for PDF, a fundamental descriptor of random variables i.e. gray values in an image?
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What is the full form for PDF, a fundamental descriptor of random variables i.e. gray values in an image?

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