274) A laboratory observation is a controlled test of a hypothesis in which the researcher manipulates one variable to discover its effect on another. Answer: FALSE Explanation: This is a description of an experiment, not a laboratory observation. 275) The variable that an experimenter manipulates is called the dependent variable. Answer: FALSE Explanation: The variable than an experimenter manipulates is the independent variable, not the dependent variable. 276) Ideally, everything in an experiment except the independent variable is held constant. Answer: TRUE Explanation: Statement of fact. 277) The dependent variable depends on the independent variable. Answer: TRUE Explanation: Statement of fact. 278) The variable that an experimenter manipulates is called the independent variable. Answer: TRUE Explanation: Statement of fact. 279) Ideally, everything in an experiment except the dependent variable is held constant. Answer: FALSE Explanation: Ideally, everything in an experiment except the independent variable is held constant. 280) The independent variable depends on the dependent variable. Answer: FALSE Explanation: The dependent variable depends on the independent variable. 281) If a researcher wants to know whether eating chocolate makes people nervous, then the amount of chocolate eaten is the independent variable. Answer: TRUE
274) A laboratory observation is a controlled test of a hypothesis in which the researcher manipulates one variable to discover its effect on another. Answer: FALSE Explanation: This is a description of an experiment, not a laboratory observation. 275) The variable that an experimenter manipulates is called the dependent variable. Answer: FALSE Explanation: The variable than an experimenter manipulates is the independent variable, not the dependent variable. 276) Ideally, everything in an experiment except the independent variable is held constant. Answer: TRUE Explanation: Statement of fact. 277) The dependent variable depends on the independent variable. Answer: TRUE Explanation: Statement of fact. 278) The variable that an experimenter manipulates is called the independent variable. Answer: TRUE Explanation: Statement of fact. 279) Ideally, everything in an experiment except the dependent variable is held constant. Answer: FALSE Explanation: Ideally, everything in an experiment except the independent variable is held constant. 280) The independent variable depends on the dependent variable. Answer: FALSE Explanation: The dependent variable depends on the independent variable. 281) If a researcher wants to know whether eating chocolate makes people nervous, then the amount of chocolate eaten is the independent variable. Answer: TRUE
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