Answer
Who: Kentucky Derby races;
What: Date, winner, margin, jockey, net proceed to winner, duration, track condition;
When: 1875 to 2008;
Where: Churchill Downs, Louisville, Kentucky;
Why: Not specified (Maybe to see trends in horse racing);
How: Official statistics collected at the race
Variable: Year; Type: Quantitative; Units: Day and year;
Variable: Winner; Type: Identifier;
Variable: Margin; Type: Quantitative; Units: Horse lengths;
Variable: Jockey; Type: Categorical;
Variable: Net proceeds to winner; Type: Quantitative; Units: Dollars;
Variable: Duration; Type: Quantitative; Units: Minutes and seconds;
Variable: Track condition; Type: Categorical
Work Step by Step
Who: Kentucky Derby races;
What: Date, winner, margin, jockey, net proceed to winner, duration, track condition;
When: 1875 to 2008;
Where: Churchill Downs, Louisville, Kentucky;
Why: Not specified (Maybe to see trends in horse racing);
How: Official statistics collected at the race
Variable: Year; Type: Quantitative; Units: Day and year;
Variable: Winner; Type: Identifier;
Variable: Margin; Type: Quantitative; Units: Horse lengths;
Variable: Jockey; Type: Categorical;
Variable: Net proceeds to winner; Type: Quantitative; Units: Dollars;
Variable: Duration; Type: Quantitative; Units: Minutes and seconds;
Variable: Track condition; Type: Categorical