Question

practice it! select the statement(s) that accurately distinguish between the three types of investigations. an experimental investigation is a controlled test of a hypothesis requiring specific variables, a controlled environment, and precision. a comparative investigation has few to no controls, fewer restrictions, and tests multiple groups at once. comparative investigations are considered faster and cheaper because multiple groups can be tested or observed at once. descriptive investigations require observations of a single group in a real - world setting. a comparative investigation is a controlled test of a hypothesis. they require specific variables, a controlled environment, and precision. an experimental investigation has few to no controls, fewer restrictions, and tests multiple groups at once. descriptive investigations are observations of a subject/group in a natural environment. they do not require a hypothesis or variables. experimental investigations are usually conducted in controlled settings, require a testable hypothesis, and include test, outcome and controlled variables. the three types of investigations are all considered experiments. all three require observations to be made of the natural world, testable questions and hypotheses. please choose an answer

Explanation:

Descriptive investigations focus on observing without a hypothesis, in natural - world settings with no or few controls. Comparative investigations test multiple groups at once in a real - world setting and are quicker and cheaper for multiple groups. Experimental investigations are controlled tests of hypotheses in controlled environments with specific variables. The key differences lie in the presence of a hypothesis, control of variables, and the setting.

Answer:

Descriptive investigations are observations of the natural world without a hypothesis or strict variable control. Comparative investigations test multiple groups in real - world settings and are faster for multiple groups. Experimental investigations are controlled tests of hypotheses in controlled environments with specific variables.