Research Aptitude MCQ collection

531. Which of the following is a non-parametric test?

Correct Answer: Correct answer is: (B) Median Test.

Exam Relevance: AP Statistics, GRE, GMAT, MCAT

Difficulty: Moderate

Concept notes: Non-parametric tests are statistical methods that do not rely on assumptions about the distribution of the data. They are often used when the data does not meet the assumptions required for parametric tests.

Common Mistakes: Students may confuse non-parametric tests with parametric tests, which assume a specific distribution (e.g., normal distribution).

Explanations: The Median Test is a non-parametric test used to determine if two or more groups have the same median. It does not assume a specific distribution of the data, making it a non-parametric method. The other options (Analysis of Covariance, Analysis of Variance, and Critical Ratio) are parametric tests that assume specific distributions or relationships in the data.

Option Analysis:

Option A: Analysis of Covariance is a parametric test that assesses the main and interaction effects of categorical variables on a continuous dependent variable, controlling for the effects of selected other continuous variables, which are co-variates.
Option B: Median Test is a non-parametric test used to determine if two or more groups have the same median. It does not assume a specific distribution of the data.
Option C: Analysis of Variance (ANOVA) is a parametric test used to compare the means of two or more groups. It assumes that the data is normally distributed and has equal variances.
Option D: Critical Ratio is a parametric test used to determine if the difference between two means is statistically significant. It assumes that the data is normally distributed.

532. Fundamental Research is otherwise called

Correct Answer: Correct answer is: (C) Pure Research.

Exam Relevance: PhD Qualifying Exams, Research Methodology Exams, Academic Journals

Difficulty: Moderate

Concept notes: Fundamental research, also known as pure research, is conducted to expand knowledge and understanding without immediate practical application.

Common Mistakes: Students may confuse fundamental research with applied research, which aims to solve specific problems.

Explanations: Fundamental research, also referred to as pure research, is driven by curiosity and the pursuit of knowledge for its own sake. It does not have immediate practical applications but contributes to the foundational knowledge in a field. This aligns with the definition of pure research, making it the correct answer.

Option Analysis:

Option A: Action research is a form of applied research that aims to solve practical problems in real-world settings.
Option B: A pilot study is a small-scale preliminary study conducted to test the feasibility of a larger study.
Option C: Pure research is synonymous with fundamental research, focusing on expanding knowledge without immediate practical application.
Option D: A survey is a method of collecting data from a sample of individuals to understand their opinions or behaviors.

533. The method of selecting a portion of the universe with a view to drawing conclusion about the universe in Toto is known as

Correct Answer: Correct answer is: (D) Sampling.

Exam Relevance: GRE, GMAT, Statistics Exams, Research Methodology Exams

Difficulty: Easy

Concept notes: Sampling is the method of selecting a portion of the universe to draw conclusions about the entire population.

Common Mistakes: Students may confuse sampling with other statistical methods like randomizing, which is a technique used within sampling but not the method itself.

Explanations: Sampling involves selecting a subset of the population to study, with the goal of making inferences about the entire population. This method is widely used in statistics and research to make generalizations about a larger group based on the characteristics of a smaller, representative group.

Option Analysis:

Option A: Scaling is a method used to measure variables on a standardized scale, not a method for selecting a portion of the universe.
Option B: Leveling is not a recognized statistical term in this context.
Option C: Randomizing is a technique used within sampling to ensure that the sample is representative of the population, but it is not the method of selecting the sample itself.
Option D: Sampling is the correct method for selecting a portion of the universe to draw conclusions about the entire population.

Mnemonic: S - Select, A - A portion, M - Make inferences, P - Population.

534. In Research thesis the importance of introduction is

Correct Answer: Correct answer is: (D) All of the above.

Exam Relevance: PhD Qualifying Exams, Dissertation Defense, Research Methodology Exams

Difficulty: Moderate

Concept notes: The introduction in a research thesis is crucial as it sets the stage for the entire study.

Common Mistakes: Students may overlook the importance of the introduction, focusing instead on the methodology or results sections.

Explanations: The introduction in a research thesis serves multiple purposes. It imbibes the importance of the problem by providing context and background information. It determines the direction of the survey related to the problem by outlining the research questions or hypotheses. It also explains the objectives of the problem by clearly stating what the research aims to achieve. Therefore, all the given options are correct, making the answer "All of the above."

Option Analysis:

Option A: The introduction does indeed imbibe the importance of the problem by providing context and background information.
Option B: The introduction determines the direction of the survey by outlining the research questions or hypotheses.
Option C: The introduction explains the objectives of the problem by clearly stating the research aims.
Option D: Since all the above options are correct, this is the correct answer.

535. Ethics in researches can be develop vices due to the presence of

Correct Answer: Correct answer is: (D) All of the above.

Exam Relevance: PhD Qualifying Exams, Research Methodology Exams, Ethics in Research Exams

Difficulty: Moderate

Concept notes: Ethical research can be compromised by various factors including prejudices, fallacies, and contaminated facts.

Common Mistakes: Students may overlook the cumulative effect of multiple factors on ethical research.

Explanations: Ethical research can be compromised by prejudices, which are preconceived opinions that can bias the research process. Fallacies, or logical errors, can also undermine the integrity of research. Contaminated facts, which are inaccurate or manipulated data, can further corrupt the research. Therefore, all of these factors can contribute to ethical vices in research.

Option Analysis:

Option A: Prejudices can indeed lead to ethical vices in research.
Option B: Fallacies can also contribute to ethical issues in research.
Option C: Contaminated facts can corrupt the research process and lead to ethical problems.
Option D: All of the above factors can contribute to ethical vices in research.

Mnemonic: PFC: Prejudices, Fallacies, Contaminated

536. If you ask a question that's already been answered a thousand times before, you're only doing research that someone else has already done. Ask a question with an original slant to it.Which of these questions is a GOOD question?

Correct Answer: Correct answer is: (B) How does restricting cell phone use in school affect student social interaction?.

Exam Relevance: AP Research, IB Extended Essay, SAT Essay

Difficulty: Moderate

Concept notes: A good research question should have an original slant and not simply rehash commonly asked questions.

Common Mistakes: Students may mistakenly choose a question that is too broad or has been extensively researched.

Explanations: The question "How does restricting cell phone use in school affect student social interaction?" is a good question because it focuses on a specific aspect of cell phone use in schools and explores its impact on social interaction, which is an original and nuanced angle.

Option Analysis:

Option A: This question is too broad and has been asked many times before, making it less original.
Option B: This question is more specific and original, focusing on the impact of cell phone restrictions on social interaction.
Option C: This option is incorrect because only one of the questions is good.
Option D: This option is incorrect because one of the questions is indeed good.

537. ..... research is where an investigator manipulates one or more factors (independent variables) to observe the effect on some behavior or mental process (the dependent variable).

Correct Answer: Correct answer is: (A) Experimental.

Exam Relevance: PSYCH 101, Research Methods in Psychology, AP Psychology

Difficulty: Easy

Concept notes: Experimental research involves manipulating independent variables to observe effects on dependent variables.

Common Mistakes: Students may confuse experimental research with correlational research, which does not involve manipulation of variables.

Explanations: In experimental research, the investigator manipulates one or more factors (independent variables) to observe the effect on some behavior or mental process (the dependent variable). This manipulation allows for the establishment of cause-and-effect relationships.

Option Analysis:

Option A: Correct. Experimental research involves manipulation of variables to observe effects.
Option B: Incorrect. Correlational research does not involve manipulation of variables.
Option C: Incorrect. Descriptive research involves observing and recording behaviors without manipulation.
Option D: Incorrect. Observational research involves observing behaviors without manipulation.

Mnemonic: E-MAN: Experimental Manipulates And Not (correlational, descriptive, observational)

538. What variable in an experiment is the manipulated variable? For example: keep bread at room temp, and keep another one in the refrigerator- here you are changing the temps on purpose to see what happens.

Correct Answer: Correct answer is: (D) Independent Variable.

Exam Relevance: AP Biology, AP Chemistry, IB Science

Difficulty: Easy

Concept notes: The independent variable is the variable that is manipulated or changed by the experimenter to observe its effect on the dependent variable.

Common Mistakes: Students often confuse the independent variable with the dependent variable, which is the outcome measured in response to changes in the independent variable.

Explanations: In the given example, the temperature is the variable that is intentionally changed (manipulated) to observe its effect on the bread. Therefore, the temperature is the independent variable.

Option Analysis:

Option A: The operational definition is a clear and specific description of how a variable is measured or manipulated in an experiment, not the variable itself.
Option B: The control variable is a variable that is kept constant throughout the experiment to ensure that any changes in the dependent variable are due to the independent variable.
Option C: The dependent variable is the outcome that is measured in response to changes in the independent variable.
Option D: The independent variable is the variable that is manipulated or changed by the experimenter to observe its effect on the dependent variable.

539. When we say that science is parsimonious, we mean that

Correct Answer: Correct answer is: (B) The best scientific theories are those that offer the simplest explanations for a law.

Exam Relevance: GRE, MCAT, LSAT

Difficulty: Moderate

Concept notes: Parsimony in science refers to the principle of preferring simpler explanations over more complex ones when multiple explanations are possible.

Common Mistakes: Students may confuse parsimony with the idea that science must always be accurate or that theories are based on laws, rather than understanding that parsimony emphasizes simplicity in explanations.

Explanations: The principle of parsimony, also known as Occam's Razor, suggests that among competing hypotheses, the one with the fewest assumptions should be selected. In the context of scientific theories, this means that the best theories are those that provide the simplest explanations for observed phenomena or laws. This aligns with the idea that unnecessary complexity should be avoided in scientific explanations.

Option Analysis:

Option A: This option is incorrect because it does not relate to the principle of parsimony. The statement about causes occurring after specific effects is not relevant to the concept of simplicity in scientific theories.
Option B: This option correctly reflects the principle of parsimony, which emphasizes simplicity in scientific explanations.
Option C: This option is incorrect because it refers to the accuracy of scientific descriptions rather than the simplicity of explanations.
Option D: This option is incorrect because it refers to the basis of scientific theories on laws, which does not directly address the principle of parsimony.

540. The Ethics in research is not related to

Correct Answer: Correct answer is: (C) Self-interest.

Exam Relevance: PhD Qualifying Exams, Research Methodology Exams, Professional Ethics Exams

Difficulty: Moderate

Concept notes: Ethics in research is concerned with principles that guide the conduct of research, ensuring it is conducted responsibly and with integrity. It involves considerations such as humanity, reliability, and adherence to the scientific method.

Common Mistakes: Students may mistakenly believe that self-interest is a component of ethical research, but ethical research is meant to be objective and free from personal gain.

Explanations: Ethics in research is not related to self-interest because ethical research must be conducted with the aim of advancing knowledge and understanding, rather than for personal gain or benefit. The principles of ethics in research include ensuring the well-being of participants, maintaining the integrity of the research process, and upholding the standards of the scientific method.

Option Analysis:

Option A: Humanity is a core principle in ethical research, ensuring the well-being and rights of participants are respected.
Option B: Reliability is a key aspect of ethical research, ensuring that the results are consistent and reproducible.
Option C: Self-interest is not a principle of ethical research, as it can lead to biased or unethical practices.
Option D: The scientific method is fundamental to ethical research, providing a structured approach to inquiry and validation.

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Research Aptitude MCQ collection - Set 54

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