To analyse researched data so the results will be accurate and free from bias you could conduct a self-assessment on the data you have already collected and see if the results reflect the truth or not. Another method you could use to ensure that your data is accurate is to have a colleague conduct the collection of the data in the same way, if you results match one another’s then you can see that the data is accurate. If any inconsistencies appear in any of your data then you will be able to see that one of your outcomes is inaccurate and biased.
When considering the type of information that you wish to present, you should be sure that the data is not anonymous as you will have no way to ensure the data is free from bias. Another point to note is that the information you are presenting will need to not discriminate towards others.