During a study on the effect of different lighting levels on
productivity, researchers first lowered the lights. Productivity
improved. Raised the lights. Productivity was still improved. They
returned to the original lighting levels. Productivity was still
improved.
<span>c. there is not a diminishing supply of trees.</span>
Answer: Retentive memory
Explanation: His ability to remember, his previous experience ,location of the local shop and item he bought explains how good is retentive memory is.
Answer:
b. Observational measures cannot be used in making causal claims
Explanation:
Observational data: The term observational data is defined as the information or data being gathered in the absence of the research participants, for example, employees but the activities of the participants are being recorded explicitly. In this case, the data or information being gathered had not been manipulated by the researcher.
Observational data can be gathered through various methods, such as the survey method. The data or information is collected is usually qualitative but it can also be mixed or quantitative as well.
In the question above, the statement which is not true for observational data is observational measures cannot be used in making causal claims.