[Campbell Biology P.75] Which of the following observations represents qualitative data? | Practice Question

Which of the following observations represents qualitative data?

  • A: The pH of the solution was measured at 7.2.
  • B: The plant grew 3 centimeters taller over a week.
  • C: The fish displayed aggressive behaviors towards intruders.
  • D: The average temperature of the room was 25 degrees Celsius.

Explanation

Qualitative data are descriptive and non-numerical observations. 'The fish displayed aggressive behaviors towards intruders' describes a characteristic without using numbers, making it qualitative data. The other options involve numerical measurements.