9. The purpose of verification is to ensure that the data entered into the system or used in computations is accurate. This is typically done by double-checking the data against the original source. For example, if you're entering data from a paper form into a computer system, you might check the data you've entered against the original form to make sure it's correct.

10. Three methods of validation include:
- Range Check: This method checks if the entered data falls within a pre-defined range. For example, if you're entering a person's age, the system might check to make sure the age is between 0 and 120.
- Format Check: This method checks if the entered data is in the correct format. For example, if you're entering a phone number, the system might check to make sure it's in the format (XXX) XXX-XXXX.
- Consistency Check: This method checks if the entered data is consistent with other data in the system. For example, if you're entering a date of birth and a date of death, the system might check to make sure the date of death is later than the date of birth.

11. Validation and verification do not ensure that data is correct because they can only check for certain types of errors. For example, they can check if data is in the right format or if it falls within a certain range, but they can't check if the data is actually true or accurate. For example, if you're entering a person's date of birth, validation and verification can check if the date is in the correct format and if it's a plausible date, but they can't check if it's the person's actual date of birth. That would require additional information or sources.

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9. The purpose of verification is to ensure that the data entered into the system or used in computations is accurate. This is typically done by double-checking the data against the original source. For example, if you're entering data from a paper form into a computer system, you might check the data you've entered against the original form to make sure it's correct.

10. Three methods of validation include:
   - Range Check: This method checks if the entered data falls within a pre-defined range. For example, if you're entering a person's age, the system might check to make sure the age is between 0 and 120.
   - Format Check: This method checks if the entered data is in the correct format. For example, if you're entering a phone number, the system might check to make sure it's in the format (XXX) XXX-XXXX.
   - Consistency Check: This method checks if the entered data is consistent with other data in the system. For example, if you're entering a date of birth and a date of death, the system might check to make sure the date of death is later than the date of birth.

11. Validation and verification do not ensure that data is correct because they can only check for certain types of errors. For example, they can check if data is in the right format or if it falls within a certain range, but they can't check if the data is actually true or accurate. For example, if you're entering a person's date of birth, validation and verification can check if the date is in the correct format and if it's a plausible date, but they can't check if it's the person's actual date of birth. That would require additional information or sources.

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9. The purpose of verification is to ensure that the data entered into the system or used in computations is accurate. This is typically done by double-checking the data against the original source. For example, if you're entering data from a paper form into a computer system, you might check the data you've entered against the original form to make sure it's correct.

10. Three methods of validation include:
   - Range Check: This method checks if the entered data falls within a pre-defined range. For example, if you're entering a person's age, the system might check to make sure the age is between 0 and 120.
   - Format Check: This method checks if the entered data is in the correct format. For example, if you're entering a phone number, the system might check to make sure it's in the format (XXX) XXX-XXXX.
   - Consistency Check: This method checks if the entered data is consistent with other data in the system. For example, if you're entering a date of birth and a date of death, the system might check to make sure the date of death is later than the date of birth.

11. Validation and verification do not ensure that data is correct because they can only check for certain types of errors. For example, they can check if data is in the right format or if it falls within a certain range, but they can't check if the data is actually true or accurate. For example, if you're entering a person's date of birth, validation and verification can check if the date is in the correct format and if it's a plausible date, but they can't check if it's the person's actual date of birth. That would require additional information or sources.

9 Describe the purpose of verification.10 Identify three methods of validation.11 Explain, using examples, why validation andverification do not ensure that data is correct.

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