| 1996 |
| | ALL | SINGLE | HEAD OF | MARRIED | MARRIED |
| | | | HOUSEHOLD | JOINT | SEPARATE |
| ADJUSTED GROSS INCOME |
| NUMBER OF NONMISSING VALUES | | 838,802 | 356,181 | 73,611 | 395,439 | 13,571 |
| THE MEAN | | $35,037 | $15,120 | $21,899 | $55,756 | $25,332 |
| THE SUM ($million) | | $29,389 | $5,386 | $1,612 | $22,048 | $344 |
| THE STANDARD DEVIATION | | $166,100 | $54,269 | $75,457 | $228,135 | $237,894 |
| THE UPPER QUARTILE | | $44,603 | $19,618 | $27,294 | $62,770 | $27,611 |
| THE MEDIAN | | $22,557 | $9,778 | $17,115 | $42,764 | $16,946 |
| THE LOWER QUARTILE | | $9,402 | $4,090 | $10,247 | $26,150 | $8,277 |
| THE 90TH PERCENTILE | | $69,277 | $32,927 | $40,613 | $89,250 | $41,087 |
| THE 10TH PERCENTILE | | $3,345 | $1,726 | $5,340 | $15,271 | $2,746 |
|
|
| PERSONAL EXEMPTIONS |
| NUMBER OF NONMISSING VALUES | | 838,802 | 356,181 | 73,611 | 395,439 | 13,571 |
| THE MEAN | | 2 | 1 | 3 | 4 | 1 |
| THE SUM | | 1,883,983 | 255,471 | 184,682 | 1,423,545 | 20,285 |
| THE STANDARD DEVIATION | | 2 | 1 | 1 | 2 | 1 |
| THE UPPER QUARTILE | | 3 | 1 | 3 | 5 | 2 |
| THE MEDIAN | | 2 | 1 | 2 | 3 | 1 |
| THE LOWER QUARTILE | | 1 | 0 | 2 | 2 | 1 |
| THE 90TH PERCENTILE | | 5 | 1 | 4 | 6 | 3 |
| THE 10TH PERCENTILE | | 0 | 0 | 2 | 2 | 1 |
|
|
| FEDERAL INCOME TAX* |
| NUMBER OF NONMISSING VALUES | | 838,802 | 356,181 | 73,611 | 395,439 | 13,571 |
| THE MEAN | | $4,430 | $1,748 | $1,792 | $7,360 | $3,759 |
| THE SUM | | $3,716,156,791 | $622,706,509 | $131,895,980 | $2,910,535,113 | $51,019,189 |
| THE STANDARD DEVIATION | | $46,510 | $15,381 | $15,283 | $64,820 | $57,638 |
| THE UPPER QUARTILE | | $4,043 | $1,886 | $2,059 | $6,050 | $2,696 |
| THE MEDIAN | | $1,556 | $559 | $634 | $3,394 | $1,316 |
| THE LOWER QUARTILE | | $152 | $2 | $0 | $1,279 | $219 |
| THE 90TH PERCENTILE | | $8,150 | $3,677 | $3,919 | $12,308 | $5,479 |
| THE 10TH PERCENTILE | | $0 | $0 | $0 | $0 | $0 |