Assigned 4/14/04
Due 4/21
Returned 4/28
Graded by Dionne C. and Dr. G.
[10 points -- point number in brackets]
7.4
(A) [1] The crude rate (per 100,000) = 652.
[2] The crude rate
in Florida (reported in Table 7.5) is 1026. Notice how much higher the
crude rate is in Florida!
(B) Age-specific rates, fictitious state
[3 - 5: � point for each correct age-specific rate]
| Age | Rate (per 100,000) |
| 0 - 4 | 238 |
| 5 -24 | 64 |
| 25 - 44 | 208 |
| 45 - 64 | 809 |
| 65 - 74 | 2221 |
| 75+ | 6887 |
[6] Age-specific rates are identical in the two states.
[7] The higher rate in
Florida is due to the larger percentage of older people in that state.
For
example, 1,038,000 of the 13,278,000 (11.9%) of the people in Florida are over
the age of 75. This compares with 100,000 of 2,450,000 (4.1%) in the fictitious
state.
(C) Calculations for age-adjustment
| Age | Fictitious state | Standard Million (Ni) | Product (Niri) |
| 0 - 4 | 238 | 76158 | 18125604 |
| 5 -24 | 64 | 286501 | 18336064 |
| 25 - 44 | 208 | 325971 | 67801968 |
| 45 - 64 | 809 | 185402 | 149990218 |
| 65 - 74 | 2221 | 72494 | 161009174 |
| 75+ | 6887 | 53474 | 368275438 |
[8] SNiri = 18125604 + 18336064
+ . . . + 368275438 = 783538466
[9] aR = 783538466 / 1000000 @ 784
[10] (D) The adjusted rates for the fictitious state and Florida are identical!