To analyse and prepare researched data so the results will be accurate and free from bias you can self asses the data and ask yourself if it reflects the truth or not. Further to that you could have a colleague conduct the same investigation as you and see if the outcomes are similar. If inconsistencies occur throughout your data then you will know that one your outcomes is inaccurate and slightly biased. Depending on the type of information you wish to present you will need to ensure that the data isn’t anonymous as you will have no way to guarantee if the data is free from bias. Another point to note is that depending on the information, you will need to make sure that it is not discriminatory towards others.