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Validation means to after verification the data is correct or not, verification means cross checking the data with record , or with original documents.So its like your visa card is verified that its on your name, but its valid or not will be know by either you or the bank, means when you swipe you card if there is no money then the card is verified but not valid.
two methods of presenting data 1.tabular form 2.pictorial form
Is a range of mathematical and scientific methods used to answer data
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Checking that we are building the system right
Cross-verification or multi-source verification.
1.verification 2.validation
No, the census does not use background checks by law enforcement; it relies on self-reporting and data verification methods.
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It is the checking of data input to a system to ensure that it is what is meant to have been input.
It is part of security measurers used in conjunction with other methods to provide for better security in many applications.
There are five different methods in collecting data. The methods in data collect are registration, questionnaires, interviews, direct observations, and reporting.
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