Question

collecting and organizing data
fhs 25-26 biology cr sem a
professor tan studies water quality in streams near chemical plants. which is a type of qualitative data that professor tan should record during these studies?
the oxygen concentration of the water
the ph of the water
any changes in sizes of fish population
any occurrences of unusual odors

Explanation:

To determine qualitative data, we distinguish it from quantitative (numerical) data. Qualitative data is descriptive, non - numerical.

• "the oxygen concentration of the water" is a numerical measurement (quantitative).
• "the pH of the water" is a numerical value (quantitative).
• "any changes in sizes of fish population" involves numerical size measurements (quantitative).
• "any occurrences of unusual odors" is descriptive (non - numerical), so it's qualitative data.

Answer:

any occurrences of unusual odors