Research Aptitude MCQ collection

1411. Which type of research is approached through the methods of personal interviews, mailed questionnaires and personal discussions besides indirect oral investigation?

Correct Answer: Correct answer is: (B) Survey Research.

Exam Relevance: Research Methods, Social Science Exams, Psychology Exams

Difficulty: Moderate

Concept notes: Survey research involves collecting data from a sample of individuals through various methods such as personal interviews, mailed questionnaires, and personal discussions. It is a structured method of gathering information from a defined population.

Common Mistakes: Students may confuse survey research with other qualitative methods like case studies or field studies, which typically involve more in-depth, qualitative data collection.

Explanations: Survey research is the correct answer because it encompasses the methods mentioned, including personal interviews, mailed questionnaires, and personal discussions. These methods are used to gather quantitative data from a large number of respondents, making it a suitable choice for the given context.

Option Analysis:

Option A: Observation involves watching and recording behaviors or events, which does not align with the methods listed in the question.
Option B: Survey Research involves collecting data through structured methods such as personal interviews, mailed questionnaires, and personal discussions, which matches the question's description.
Option C: Case Study involves an in-depth examination of a single individual, group, or event, which is not aligned with the broad data collection methods mentioned.
Option D: Field Study involves direct observation and data collection in a natural setting, which does not match the structured methods described in the question.

1412. If we took the 500 people attending a school in New York City, divided them by gender, and then took a random sample of the males and a random sampling of the females, the variable on which we would divide the population is called the.....

Correct Answer: Correct answer is: (D) Stratification variable.

Exam Relevance: AP Statistics, GRE, GMAT, Undergraduate Statistics Exams

Difficulty: Moderate

Concept notes: In statistics, stratification is a method of dividing a population into distinct subgroups (strata) based on a specific characteristic. The variable used to divide the population into these subgroups is called the stratification variable.

Common Mistakes: Students may confuse the stratification variable with the dependent or independent variable, which are terms used in experimental design rather than sampling methods.

Explanations: The variable on which the population is divided, in this case, gender, is called the stratification variable. This is because the population is being divided into distinct subgroups (males and females) based on this characteristic for the purpose of sampling.

Option Analysis:

Option A: Dependent variable is incorrect because it refers to the outcome variable in an experiment, not a sampling method.
Option B: Sampling variable is not a standard term in statistics and does not accurately describe the variable used for stratification.
Option C: Independent variable is incorrect because it refers to the variable manipulated in an experiment, not a sampling method.
Option D: Stratification variable is correct because it refers to the variable used to divide the population into subgroups for sampling.

1413. Systematic error is associated with:

Correct Answer: Correct answer is: (C) Validity.

Exam Relevance: GRE, MCAT, LSAT

Difficulty: Moderate

Concept notes: Systematic error refers to a consistent bias in measurements or observations that affects the accuracy of the results. Validity is concerned with the accuracy and truthfulness of a measurement or test, ensuring that it measures what it is intended to measure.

Common Mistakes: Students often confuse systematic error with reliability, which is about the consistency of the measurement rather than its accuracy.

Explanations: Systematic error is associated with validity because validity is concerned with the accuracy of a measurement. If there is a systematic error, the measurement is not accurately reflecting the true value, thus affecting the validity of the measurement.

Option Analysis:

Option A: Reliability is about the consistency of the measurement, not its accuracy.
Option B: Applicability refers to the practical use of a measurement, not its accuracy.
Option C: Validity is concerned with the accuracy and truthfulness of a measurement, which is directly affected by systematic error.
Option D: Personality is unrelated to systematic error in the context of measurement accuracy.

1414. Grrr! ..... always late to class!

Correct Answer: Correct answer is: (C) They're.

Exam Relevance: SAT, ACT, TOEFL, IELTS

Difficulty: Easy

Concept notes: The contraction "they're" is used to represent "they are."

Common Mistakes: Students often confuse "they're," "their," and "there" due to similar pronunciations.

Explanations: The sentence "Grrr! ..... always late to class!" requires a contraction that represents "they are." The correct contraction is "they're," which is why it is the correct answer.

Option Analysis:

Option A: "There" is used to indicate a place or position, not a contraction for "they are."
Option B: "Their" is a possessive pronoun, not a contraction for "they are."
Option C: "They're" is the correct contraction for "they are," fitting the context of the sentence.
Option D: "None of the above" is incorrect because "they're" is the correct answer.

Mnemonic: They're = They are

1415. Which variable is deliberately manipulated by an experimenter to investigate its effect?

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

Exam Relevance: AP Psychology, GRE Psychology, MCAT

Difficulty: Easy

Concept notes: In an experiment, the independent variable is the one that the experimenter manipulates to observe its effect on the dependent variable.

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

Explanations: The independent variable is deliberately manipulated by the experimenter to investigate its effect on the dependent variable. This manipulation allows researchers to determine cause-and-effect relationships.

Option Analysis:

Option A: A confounding variable is an extraneous variable that correlates with both the independent and dependent variables, potentially misleading the results.
Option B: The dependent variable is the outcome that is measured in response to changes in the independent variable.
Option C: An extraneous variable is any variable other than the independent variable that could influence the dependent variable.
Option D: The independent variable is the variable that is manipulated by the experimenter to observe its effect on the dependent variable.

1416. Which of the following best describes a Type I error?

Correct Answer: Correct answer is: (A) The null is true, but we mistakenly reject it.

Exam Relevance: AP Statistics, GRE, GMAT, MCAT

Difficulty: Moderate

Concept notes: A Type I error occurs when the null hypothesis is true, but we incorrectly reject it.

Common Mistakes: Students often confuse Type I and Type II errors. Type I error is rejecting a true null hypothesis, while Type II error is failing to reject a false null hypothesis.

Explanations: A Type I error is defined as the error made when the null hypothesis is true, but we incorrectly reject it. This aligns with the description in option A.

Option Analysis:

Option A: This is the correct definition of a Type I error.
Option B: This describes a correct decision, not an error.
Option C: This describes a Type II error, not a Type I error.
Option D: This describes a correct decision, not an error.

1417. The correlation between intelligence test scores and grades is:

Correct Answer: Correct answer is: (B) Positive.

Exam Relevance: Psychology exams, Educational Psychology exams, Statistics exams

Difficulty: Moderate

Concept notes: Intelligence test scores and grades are positively correlated, meaning higher intelligence test scores tend to be associated with higher grades.

Common Mistakes: Students may mistakenly believe that intelligence test scores and grades are perfectly correlated, which is not the case as other factors can influence grades.

Explanations: Intelligence test scores and grades are positively correlated because individuals with higher intelligence tend to perform better academically, leading to higher grades. However, this correlation is not perfect, as other factors such as effort, study habits, and external circumstances can also influence academic performance.

Option Analysis:

Option A: Intelligence test scores and grades are not perfectly correlated, as other factors can influence grades.
Option B: Intelligence test scores and grades are positively correlated, meaning higher intelligence test scores tend to be associated with higher grades.
Option C: Intelligence test scores and grades are not uncorrelated, as there is a positive relationship between the two.
Option D: Intelligence test scores and grades are not negatively correlated, as higher intelligence test scores are generally associated with higher grades.

1418. These refers to a person, place things or phenomenon that needs to be measured in some way?

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

Exam Relevance: Research Methods, Statistics, Psychology Exams

Difficulty: Easy

Concept notes: Variables are elements in research that can be measured and can change or vary.

Common Mistakes: Students may confuse variables with other research components like the conceptual framework or methodology.

Explanations: Variables are the specific factors or elements in a study that can be measured and can change. They are essential for understanding the relationships and patterns in research data. The other options, such as conceptual framework, objective of the study, and methodology, do not directly refer to measurable elements.

Option Analysis:

Option A: Correct. Variables are the measurable elements in a study.
Option B: Incorrect. A conceptual framework is a theoretical structure that guides the research, not a measurable element.
Option C: Incorrect. The objective of the study is the purpose or goal of the research, not a measurable element.
Option D: Incorrect. Methodology refers to the methods and procedures used in the research, not a measurable element.

1419. Difficulty level of item is not a matter of concern in the case of

Correct Answer: Correct answer is: (B) Criterion referenced test.

Exam Relevance: GRE, GMAT, TOEFL, Professional Licensing Exams

Difficulty: Moderate

Concept notes: In a criterion-referenced test, the focus is on whether the test-taker has achieved a specific level of mastery or competence in a particular skill or knowledge area, rather than comparing their performance to others.

Common Mistakes: Students often confuse criterion-referenced tests with norm-referenced tests, where the difficulty level of items is a significant factor.

Explanations: In a criterion-referenced test, the difficulty level of the items is not a matter of concern because the test is designed to measure whether the test-taker has achieved a specific level of mastery or competence in a particular skill or knowledge area. The focus is on the individual's performance against a set standard, not on the relative difficulty of the items.

Option Analysis:

Option A: Placement tests often consider the difficulty level of items to place students appropriately in different levels of a course or program.
Option B: Criterion-referenced tests focus on whether the test-taker has achieved a specific level of mastery or competence, not on the difficulty level of the items.
Option C: Intelligence tests often vary in difficulty to assess a range of cognitive abilities and compare individuals' performance.
Option D: Norm-referenced tests compare an individual's performance to a norm group and thus consider the difficulty level of items.

1420. What is another term that refers to a confounding extraneous variable?

Correct Answer: Correct answer is: (B) Third variable.

Exam Relevance: AP Psychology, GRE Psychology, MCAT

Difficulty: Easy

Concept notes: A confounding extraneous variable is often referred to as a third variable because it is an additional factor that influences both the independent and dependent variables, potentially misleading the results of an experiment.

Common Mistakes: Students may confuse the term "third variable" with other extraneous variables that do not necessarily confound the relationship between the independent and dependent variables.

Explanations: A confounding extraneous variable is known as a third variable because it introduces an additional factor that can affect the outcome of an experiment, making it difficult to determine the true relationship between the independent and dependent variables. This term is used to highlight the presence of an uncontrolled variable that can distort the results.

Option Analysis:

Option A: Incorrect, as "First variable" does not refer to a confounding extraneous variable.
Option B: Correct, as "Third variable" is another term for a confounding extraneous variable.
Option C: Incorrect, as "Last variable" is not a term used to describe a confounding extraneous variable.
Option D: Incorrect, as "Fourth variable" is not a term used to describe a confounding extraneous variable.

Mnemonic: Third Variable Troublemaker

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Research Aptitude MCQ collection - Set 142

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