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I am having difficulty understanding the difference between variance and bias. My understanding is that variance relates to how spread out data is from the

I am having difficulty understanding the difference between variance and bias.

My understanding is that variance relates to how spread out data is from the average. Bias also deals with spread away from the average. It seems like for biased values all values tend to veer off together, while in variance this is not the case. Is this correct?

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