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m 3.2. To create a new age variable age10 in units of ten years, we would Proble divide the original variable age (in years) by ten, so that a woman of age 67 would have a same factor: that is, the SD of age is 6.38, so the SD of age10 is 0.638. Suppose we want to estimate the effect of age in SD units, as is commonly done. How do we compute the new variable and what is its SD? ge10 6.7. Similarly, the standard deviation of age10 is changed by the
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