The quality of information (and the factors)

The quality of information is determined by which factors?

• Source (primary or secondary)

• Accuracy

• Age

• Completeness

• Amount of detail

How does the factor of ACCURACY effect the quality of information collected?

• If data is entered automatically by system then there is a chance of less mistakes (therefore more accurate) than if entered by a person

• Business data can change frequently, therefore data collected a long time ago may mean it is no longer useful

• If there is not enough detail then the information may not be complete and therefore wrong decisions made

• If only a few samples of data are taken then this will mean that decisions made will not be useful

How does the factor of AGE effect the quality of information collected?

• If data is entered automatically by system then there is a chance of less mistakes (therefore more accurate) than if entered by a person

• Business data can change frequently, therefore data collected a long time ago may mean it is no longer useful

• If there is not enough detail then the information may not be complete and therefore wrong decisions made

• If only a few samples of data are taken then this will mean that decisions made will not be useful

How does the factor of COMPLETENESS effect the quality of information collected?

• If data is entered automatically by system then there is a chance of less mistakes (therefore more accurate) than if entered by a person

• Business data can change frequently, therefore data collected a long time ago may mean it is no longer useful

• If there is not enough detail then the information may not be complete and therefore wrong decisions made

• If only a few samples of data are taken then this will mean that decisions made will not be useful

How does the factor of VOLUME effect the quality of information collected?

• If data is entered automatically by system then there is a chance of less mistakes (therefore more accurate) than if entered by a person

• Business data can change frequently, therefore data collected a long time ago may mean it is no longer useful

• If there is not enough detail then the information may not be complete and therefore wrong decisions made

• If only a few samples of data are taken then this will mean that decisions made will not be useful

Which of the following statements is false?

• Validation can check that the data is sensible
• Validation can check that the data falls between certain allowable boundaries
• Validation can check that the data is correct

Which of the following is NOT a method of verification?

• Double entry - typing the data in twice and getting the computer to check the second version against the first
• Using presence, range and length checks to make sure that no mistakes happen
• Printing out what you have typed in and comparing it against the source data

What is an automatic computer check to make sure data entered is sensible and reasonable known as?

• Double entry
• Verification
• Validation

Checking that data entered matches​ the original source is...

• Verification

• Validation

• Voldemort

What are 3 advantages of using an online survey to collect data

• Respondents may not feel encouraged to provide accurate, honest answers

• Conducted remotely can reduce or prevent geographical dependence

• Capable of collecting data from a large number of respondents

• Can be developed in less time (compared to other data-collection methods)

• Data errors due to question non-responses may exist. The number of respondents who choose to respond to a survey question may be different from those who chose not to respond, thus creating bias.