Pointers To Review In Research PDF

**POINTERS TO REVIEW IN Research** - **IDENTIFY VARIABLES** - **TYPES OF VARIABLES** - **HYPOTHESIS** - **TYPES OF HYPOTHESIS** - **CONTROL AND EXPERIMENTAL GROUP** - **TESTABLE QUESTION** - **ALTERNATIVE AND NULL HYPOTHESIS** - **LINEAR AND NON LINEAR** **Which of the follo...

**POINTERS TO REVIEW IN Research** - **IDENTIFY VARIABLES** - **TYPES OF VARIABLES** - **HYPOTHESIS** - **TYPES OF HYPOTHESIS** - **CONTROL AND EXPERIMENTAL GROUP** - **TESTABLE QUESTION** - **ALTERNATIVE AND NULL HYPOTHESIS** - **LINEAR AND NON LINEAR** **Which of the following statements describe the role of variables in the experiment?** Answer: Variables are the factors that can change or be controlled to determine their effects on the outcome. **Ana designed an experiment to study the effect of music volume on study performance. Which of the following potential errors might lead to invalid results?** Answer: Using participants who study different subjects. **Which of the following extraneous variables could confound the relationship between climate change and biodiversity?** **Answer: Human population growth** **A student wants to study the effect of water temperature the dissolving rate of sugar. Which of the following should be kept constant in their experiment?** **Answer:** Amount of water used. **Which of the following is the characteristic of a testable scientific question?** **It can be answered using experiments or observations.** **Which of the following is an example of hypothesis with variables?** Answer: If the amount of water increases, then the growth rate of the plant will increase. **Which of the following hypothesis describes the effect of exercise on the heart rate?** Answer: Exercise increases heart rate. Stephen wants to test how the speed of a toy car changes on different surfaces. Which of the following is a good scientific question for the experiment? Answer: How does the type of surface affect the speed of a toy car? **Which of the following statements would be the *[BEST]* null hypothesis by the given alternative hypothesis. Higher levels of depression are related to higher levels of anxiety.** There is no relationship between depression and anxiety, any observed relationship is the result of chance **Which of the following hypothesis involve analyzing the relationship between social interaction and academic performance in students?** Students who interact more socially tend to perform better in school. **Which of the following scientific questions explores the relationship between two factors and their effects on human health?** Answer: How do exercise and diet impact long-term heart health? **Which of the following hypothesis is supported by empirical evidence?** Answer: Climate change affects global temperatures. **Which of the following statements describes a linear relationship and non-linear relationship?** Answer: A linear relationship always forms a straight line, while a non-linear relationship forms a curve. **Which of the following types of correlation refers to a relationship between two variables in which both move in the same direction?** Positive **Which of the following statements are the characteristics of hypothesis in the experiment?** Hypotheses should be specific, testable, and falsifiable, allowing empirical validation or refutation **Dr. Alvin research the hypothesis that adolescent female contributes more to household task than adolescent males. Four females and two males are selected to be interviewed as the sample group. Which of the following describe the situation?** Answer: It must be biased results. **Given the dataset below, which of the following type of relationship refers the variables x and y?** **X=\| 1 \| 2 \| 3 \| 4 \| 5 \| y= \| 2 \| 4 \| 6 \| 8 \| 10 \|** Linear **Researcher is studying the effect of a new diet on weight loss. The participants are divided into two groups: one group follows the new diet, and the other follows their usual eating habits. Which of the following group refers as the control group?** The group that follows their usual eating habits. **James is conducting an experiment to test the effect of insecticides on frogs. Which of the following is the control group in his experiment?** The frogs that were not exposed to insecticides. **If an experiment is designed to test the effect of a new drug on lowering blood pressure, but participants are not randomly assigned to either the experimental or control group, which of the following would be the result of the experiment?** The results may be biased because the groups may differ in ways unrelated to the drug. **A scientist put lime at the base of tomato plant A and baked soda at the base of tomato plant B. She then sealed the plants in plastic bags. Tomato plant A eventually died, and tomato plant B stayed healthy. Which of the following is the experimental setup in this experiment?** The substance at the base of each plant **Which of the following statements is an experimental group?** You manipulate one or two independent variables. **Which of the following is the purpose of a control group in an experiment?** To serve as a baseline for comparison. **Which of the following statements is important to identify variables when designing an experiment?** To determine what will be tested, measured, and controlled. **Research shows that the older a person is, the larger their vocabulary. How can you describe the type of relationship between the variables in the example?** Positive linear **Which of the following statements is null and alternative hypothesis?** Exactly one of H0 or H1 must be true **Student wants to investigate the effect of different types of music on study concentration. Which of the following is the dependent variable?** Study concentration levels. **A study investigates the effect of teaching methods on student learning outcomes. Which of the following extraneous variable could interact with the independent variable?** **Student motivation** **Jose Cruz conducts an experiment to find out if the size of a parachute affects how fast it falls. He makes parachutes of different sizes but uses the same material and drops them from the same height.** **Why is it important to drop all parachutes from the same height?** To ensure the independent variable is the size of the parachute. **An experiment shows that increasing fertilizer beyond a certain amount does not improve plant growth. Which of the following statements is important to control variables in an experiment?** **To isolate the effects of independent variables.**