I think depending on your agenda, bias can be helpful and is expected. For example, news anchors on CNN are going to use completely different statistics than FOX because of differing political views, and that would help support their agenda. Usually it is expected in politics to skew or have bias in one's support because it helps appeal to people that associate to that side of politics, or are undecided. I do think, however, that rarely bias is expected ad should be present in one's support.
Chapter 6 Response
Bias in Support Material
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