Question

observations that deal with descriptions that cannot be expressed in numbers are called:
○ manipulated observations
○ quantitative observations
○ qualitative observations
○ operational observations

Explanation:

• "Manipulated observations" refer to observations where variables are changed, not about non - numerical descriptions.
• "Quantitative observations" are those that involve numbers and measurements.
• "Qualitative observations" are descriptions that are non - numerical, like the color, texture, etc. of an object.
• "Operational observations" are related to the operations or procedures, not about non - numerical descriptions.

Answer:

C. qualitative observations