In the sign test procedure described in this section we
In the sign test procedure described in this section, we exclude ties. A second approach is to treat half of the 0s as positive signs and half as negative signs. With a third approach, in two-tailed tests make half of the 0s positive and half negative; in one-tailed tests make all 0s either positive or negative, whichever supports the null hypothesis. Repeat Example 4 using the second and third approaches to handling ties. Do the different approaches lead to very different results?
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