5 In a couple sentences define aSolution5 A statistic is bia

5.   In a couple sentences, define a

Solution

5. A statistic is biased if it is calculated in such a way that it is only systematically different from the population parameter of interest. The following lists some types of biases, which can overlap. An unbiased statistic is one in which when the probability of committing a type I error (i.e. false positive) is less than the significance level, and that of getting a true positive (rejecting the null hypothesis when the alternative hypothesis is true) is at least that of the significance level. Unbiased statiscs are mainly attributed to hypothesis statistics compared to the former.

6. sample mean is simply the best to used based on what parameter you are interested in.