Agri-business Management- ICAR JRF/SRF 2024

• Comparing Means of Multiple Groups: ANOVA:
• Analysis of Variance (ANOVA), developed by Sir Ronald A. Fisher, is the statistical procedure used to test whether the population means of three or more independent groups are statistically equal ($H_0: \mu_1 = \mu_2 = \dots = \mu_k$) by decomposing total variation into between-group and within-group variance.
• Distractors:
• Student's t-test: Restricted to comparing the means of at most two groups.
• MANOVA: Multivariate ANOVA used when there are multiple dependent variables.
• Regression: Examines dependency and functional relationships between variables.

Correct option: (3) ANOVA

• Non-Probability vs. Probability Sampling:
• Non-Probability Sampling Techniques: Methods where elements do not have a known, non-zero probability of selection:
• Quota Sampling: Proportional non-random quotas assigned to interviewers.
• Convenience Sampling: Selecting units based on accessibility.
• Snowball Sampling: Existing subjects recruit future subjects.
• Judgmental / Purposive Sampling.
• Mixed Sampling (Multi-Stage / Stratified Probability Designs): Combines structured probability sampling designs, ensuring random selection at stages, hence not classified as a purely subjective non-probability technique.

Correct option: (3) Mixed Sampling

• Environmental Analysis Frameworks in Strategic Management:
• Tools for Environmental Analysis:
• PESTEL Analysis: Analyzes macro-environmental Political, Economic, Social, Technological, Environmental, and Legal forces.
• SWOT Analysis: Evaluates internal Strengths/Weaknesses and external Opportunities/Threats.
• CPM (Competitive Profile Matrix): Evaluates firm competitors against critical industry success factors.
• PERT (Program Evaluation and Review Technique): A quantitative project management and scheduling tool for coordinating network activity durations, NOT an environmental analysis tool.

Correct option: (4) PERT