A Researcher Studying Malnutrition Among Children in a Developing Country

question 28

Multiple Choice

A researcher studying malnutrition among children in a developing country collected weights of a random sample of children using a scale that she had set to give weights 2.5 kilograms less than
The actual weight. Which statement best describes this situation?

• A)Measurement error has occurred, and the researcher is guilty of unethical statistical practice.
• B)Measurement error has occurred, but the researcher is not guilty of unethical statistical practice.
• C)Measurement error has not occurred, and the researcher is not guilty of unethical statistical practice.
• D)Measurement error has not occurred, but the researcher is guilty of unethical statistical practice.

---

Definitions:

Interaction Effects

The impact on a dependent variable that changes depending on the levels of two or more independent variables.

Factorial Designs

Experimental setups that allow researchers to examine the effects of two or more factors by changing them simultaneously and observing the results.

Independent Variables

Variables in an experiment or model that are manipulated or changed to observe their effects on dependent variables.

Single-Factor Designs

Experimental designs that involve only one independent variable to investigate its effect on a dependent variable.