List three essential components of a well- designed scientific investigation.

well-designed scientific investigation typically includes three essential components: a clear hypothesis, a controlled experiment, and accurate data collection and analysis.<br /><br />1. **Clear Hypothesis**: A hypothesis is a testable statement about the relationship between two or more variables. It provides a clear focus for the investigation and helps guide the experimental design. A well-designed hypothesis is specific, measurable, and based on prior knowledge or theory.<br /><br />2. **Controlled Experiment**: A controlled experiment is essential for isolating the effect of the independent variable on the dependent variable. This involves manipulating the independent variable while keeping all other factors constant. By controlling these variables, researchers can draw more accurate conclusions about the relationship between the variables being studied.<br /><br />3. **Accurate Data Collection and Analysis**: Accurate data collection is crucial for a successful scientific investigation. This involves using reliable and valid measurement tools, ensuring proper experimental procedures, and minimizing errors. Data analysis should be conducted using appropriate statistical methods to determine whether the results support the hypothesis.<br /><br />By incorporating these three components, a scientific investigation can effectively test hypotheses, draw meaningful conclusions, and contribute to the advancement of scientific knowledge.