Ficha de revisão: Fundamentals of Business Research Methods

📋 Course Outline

1. Business Research Foundations
2. Research Design and Sampling
3. Measurement Scales and Hypothesis Testing
4. Statistical Tests and Software
5. Report Writing and Ethical Reporting
6. AI and Indian Research Agencies

📖 1. Business Research Foundations

🔑 Key Concepts & Definitions

• Business research : Business research is a systematic process of gathering, recording, and analyzing data to guide managerial decisions.
• Empirical, logical, structured : These describe business research as data-based, reasoned, and organized to reduce uncertainty in business operations.
• Exploratory research : Exploratory research clarifies ambiguous problems or generates new ideas, using flexible and highly qualitative approaches.

📝 Essential Points

• Business research reduces uncertainty by using evidence from collected data rather than intuition.
• Exploratory research is designed for vague problems and aims to generate insights for later study.
• Descriptive research answers Who, What, When, Where, and How but not Why.
• Causal research investigates cause–effect relationships between variables.

💡 Memory Hook

Think E for Explore: vague problem → flexible qualitative insight first.

📖 2. Research Design and Sampling

🔑 Key Concepts & Definitions

• Research design : A research design is the blueprint that specifies methods for data collection, measurement, and analysis.
• Probability sampling : Probability sampling is a method where every population element has a known, non-zero chance of selection.
• Non-probability sampling : Non-probability sampling is a method where selection depends on researcher judgment rather than a known chance mechanism.

📝 Essential Points

• A good research design functions like a master plan that saves time and money and keeps the study aligned with objectives.
• Experimental design manipulates an independent variable to observe effects on a dependent variable while controlling extraneous factors.
• Longitudinal design repeatedly measures the same sample over an extended period to track changes and trends.
• Sample size depends on population variance, confidence level, and maximum allowable error.

💡 Memory Hook

Sampling: Probability = known chance; Non-probability = human choice.

📖 3. Measurement Scales and Hypothesis Testing

🔑 Key Concepts & Definitions

• Null hypothesis : A null hypothesis states that there is no statistically significant difference, effect, or relationship between variables.
• Alternative hypothesis : An alternative hypothesis states that a significant relationship, effect, or difference exists, contradicting the null hypothesis.
• Reliability : Reliability is the consistency of a measuring instrument across repeated use under identical conditions.

📝 Essential Points

• Nominal scale provides categories only, with no meaningful numerical order or distance.
• Ordinal scale allows ranking but not knowing the distance between ranks.
• t-Test is used when sample size ≤ 30 and population standard deviation is unknown.
• Type I error is rejecting a true null hypothesis, while Type II error is failing to reject a false null hypothesis.

💡 Memory Hook

Errors: Type I = false positive; Type II = false negative.

📖 4. Statistical Tests and Software

🔑 Key Concepts & Definitions

• Correlation coefficient : The correlation coefficient measures the strength and direction of a linear relationship between two variables.
• Regression analysis : Regression analysis estimates a mathematical relationship between a dependent variable and one or more independent variables for prediction.
• Chi-square test : The chi-square test is a non-parametric method used for association between categorical variables or goodness-of-fit.

📝 Essential Points

• Correlation coefficient ranges from −1 to +1, where sign shows direction and magnitude shows strength.
• Z-Test is for comparing means with large samples (> 30) when population standard deviation is known.
• ANOVA compares means of more than two independent groups to test whether at least one group differs.
• MS Excel supports basic tabulation, descriptive statistics, and business charts, while SPSS targets complex behavioural/marketing analysis and R supports advanced modeling and visualization.

💡 Memory Hook

Z big + known σ; t small + unknown σ.

📖 5. Report Writing and Ethical Reporting

🔑 Key Concepts & Definitions

• Technical report : A technical report presents detailed methodology and findings for peers with emphasis on depth and rigor.
• Managerial report : A popular/managerial report minimizes jargon and focuses on actionable conclusions for executives.
• Ethical reporting : Ethical reporting presents data honestly without fabrication and without distorting trends that contradict findings.

📝 Essential Points

• Report structure typically includes prefatory items, a main body (introduction, methodology, findings, discussion), and terminal items (references, appendix).
• Report writing should be objective, clear, third-person, and avoid emotional or sweeping statements.
• Pilot study-style anonymity needs apply to respondents: confidentiality, anonymity, avoiding deception, and obtaining informed consent.
• Plagiarism is presenting others’ work, ideas, or wording as your own without proper acknowledgement or citation.

💡 Memory Hook

Ethics check: no deception for respondents, no fabrication for sponsors.

📖 6. AI and Indian Research Agencies

🔑 Key Concepts & Definitions

• Natural language processing : Natural language processing analyzes large volumes of text to extract themes such as sentiment or key topics.
• NSSO : NSSO is the National Sample Survey Office that conducts large-scale socio-economic surveys in India.
• NITI Aayog : NITI Aayog is India’s premier policy think tank that produces research-backed frameworks for regional development.

📝 Essential Points

• AI automates qualitative data coding, runs predictive forecasting, and cleans large datasets faster than manual workflows.
• Indian market research is shifting from paper surveys toward social media sentiment tracking, retail analytics, and real-time behavioural monitoring.
• NSSO tracks employment and consumer expenditure via large socio-economic surveys.
• NLP can process thousands of open-ended reviews in minutes to identify themes and support agile business decisions.

💡 Memory Hook

NSSO = nationwide surveys; NLP = text themes in minutes.

📊 Synthesis Tables

Measurement scales and key properties

⚠️ Common Pitfalls & Confusions

1. Students often confuse nominal vs ordinal by assuming numbers always imply ranking or distance.
2. Students may treat interval scales as having a true zero point, which would incorrectly allow ratio-style conclusions.
3. Students commonly mix up Type I vs Type II errors, reversing the false positive/false negative meaning.
4. Students may think reliability and validity are the same, but reliability is consistency while validity is measuring the intended construct.
5. Students may confuse z-test and t-test by using z-test when population standard deviation is unknown.
6. Students may place sensitive questionnaire questions early instead of at the end, increasing respondent reluctance and bias.

✅ Exam Checklist

1. Define business research as a systematic process of gathering, recording, and analyzing data to guide managerial decisions.
2. List the four major exploratory, historical, descriptive, and causal research purposes and what each is intended to answer.
3. Describe the full research process steps from problem formulation through report writing.
4. Define research design and state why it is needed as a master plan for execution and alignment.
5. Match each hypothesis term to its role: null hypothesis vs alternative hypothesis.
6. Identify the measurement scale by its properties: nominal, ordinal, interval, ratio (especially the zero-point rule).
7. Explain reliability as consistency under identical conditions and validity as measuring what the instrument intends to measure.
8. Distinguish primary data from secondary data and name at least two primary data collection methods.
9. Apply questionnaire design principles: simple language, avoid leading/double-barrelled questions, start easy, and put sensitive questions at the end.
10. Differentiate probability sampling from non-probability sampling and name at least two types of each.
11. Use the correct test rule: z-test (n>30 and known σ), t-test (n≤30 and unknown σ), chi-square (categorical association/goodness-of-fit), ANOVA (means of >2 groups).
12. State what key descriptive statistics represent: mean, median, mode, standard deviation, and variance.
13. Describe report structure elements (prefatory, main body, terminal) and contrast technical vs managerial reporting style.
14. Define plagiarism and ethical reporting requirements for respondents and sponsors.