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When sample size is small (n < 30), t-tests are used:
: Normal distribution and the application of Z-scores in quality control. Unit 3: Sampling and Estimation
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The final unit focuses on relationships between variables — essential for business forecasting and understanding how factors influence each other. When sample size is small (n < 30),
Probability sampling (random, stratified, systematic) vs. non-probability sampling. Hypothesis Testing Steps: Formulating Null ( H0cap H sub 0 ) and Alternative ( H1cap H sub 1 ) hypotheses, choosing significance levels ( ), and calculating p-values.
Kabir remembered a case study he had failed last semester. He had assumed that higher customer satisfaction scores led to higher profits. But the notes on 'Spurious Correlation' haunted him. Correlation is not Causation. Just because ice cream sales and shark attacks both go up in summer doesn't mean ice cream causes shark attacks. The notes were his shield against bad logic. in demand for both modern research and business environments
BA4101: Statistics for Management is a core first-semester subject in the Anna University MBA 2021 Regulation curriculum. This course is designed to equip management students with statistical tools essential for data-driven decision-making in business. Syllabus Overview The curriculum is divided into five core modules: Unit I: Introduction & Probability Covers basic definitions, rules for probability, and Baye’s Theorem Includes key distributions: Unit II: Sampling Distribution & Estimation Focuses on the Central Limit Theorem
You cannot survey every customer, so you must use sampling. This section covers how to ensure your small group accurately represents the whole. Core Topics Random, stratified, and cluster sampling.
Pearson Correlation Coefficient, Spearman’s Rank Correlation.
: Relative frequency, subjective probability, and axiomatic approaches.
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