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front |1 |2 |3 |4 |5 |6 |7 |8 |9 |10 |11 |12 |13 |14 |15 |16 |17 |18 |19 |20 |review |
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Previous 4 slides indicates that if you look at observed data, you have to consider difference of age. If you do not mind the difference of age, the data seldom looks different from truth. There are some factors in addition to age that should be considered
when you compare the data - sex, race, year of birth, education and so
on.
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