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InterviewSolution
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Write a note on population with linear trend. |
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Answer» ong>Answer: We now consider the HYPOTHESIS of no linear trend. By no linear trend, we mean that the proportion of women who knew someone with breast cancer does not increase (decrease) consistently with the changes in opinion from positive to neutral to negative. To perform a test of this hypothesis, we assign a numerical score to the categories of the opinion variable. For example, it seems REASONABLE to assign a score of +1 to the positive category, 0 to the neutral level and −1 to the negative category. This assignment of scores ASSUMES that the distance from positive to neutral is the same as the distance from neutral to negative. The assignment of scores is subjective and, in unusual SITUATIONS, the scoring system used can have an impact on the test of hypothesis. However, in most cases, different reasonable scoring SYSTEMS will lead to the same conclusion about the test of hypothesis. |
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