Answer
Who: Streams; Cases: Each stream is a case;
What: Name of stream, substrate of the stream, acidity of the water, temperature, BCI;
When: Not specified;
Where: Upstate New York;
Why—To study the ecology of streams;
How: Not specified;
Variable: Stream name; Type: Identifier;
Variable: Substrate; Type: Categorical;
Variable: Acidity of water; Type: Quantitative; Units: pH;
Variable: Temperature; Type: Quantitative; Units: Degrees Celsius;
Variable: BCI; Type: Quantitative; Units: Not specified
Work Step by Step
Who: Streams; Cases: Each stream is a case;
What: Name of stream, substrate of the stream, acidity of the water, temperature, BCI;
When: Not specified;
Where: Upstate New York;
Why—To study the ecology of streams;
How: Not specified;
Variable: Stream name; Type: Identifier;
Variable: Substrate; Type: Categorical;
Variable: Acidity of water; Type: Quantitative; Units: pH;
Variable: Temperature; Type: Quantitative; Units: Degrees Celsius;
Variable: BCI; Type: Quantitative; Units: Not specified
