intermediate micro

Presence of Uncertainty:
- Confirmed as a topic that is on the exam.
- Focus should be on the definitions and implications surrounding uncertainty.
- Key Concepts:
- Understanding utilities related to uncertainty.
- Significance of risk aversion.

Introduction to Angle Curve:
- Concept applied in understanding individual choice under varying budget conditions.
- Example Context:
- Individual faces a scenario where a budget is initially free.
Price Change Dynamics:
- When the price of good one decreases, the individual plots points representing their choices:
- First Price Drop (p1 down): Individual’s choices adjust, changing consumption quantity.
- Further Price Drop (p1 further down): Continuation of adjustments in consumption.
Demand Relationship:
- The relationship drawn is called a demand curve based on plotted points.
- Confirmation of correctness in the reasoning by stakeholders involved in the discussion.

Slope Representation:
- Original slope of demand relates to $p1$, with $\frac{p1}{p_2}$ being crucial for analysis.
- Assumed simplicity in considering $p_2 = 1$ for early calculations.
Marginal Rate of Substitution (MRS):
- Defined as the slope of the indifference curve.
- Indicates how willing individuals are to trade between goods:
- E.g., For every unit of good one, the individual is willing to give up two units of good two.
Utility Maximization Condition:
- Reached when $\frac{MU1}{MU2} = \frac{p1}{p2}$
- Reflects the idea: The satisfaction derived per dollar spent on each good must be equal.

Price Changes and New Consumption Levels:
- As price changes, evaluation of consumption choices and their corresponding utility outcomes is vital.
- Examples include moving from an initial budget to adjusted budgets following price decreases.
Substitution and Income Effects:
- Substitution Effect:
- Describes increased demand for a good when its price decreases.
- Income Effect:
- Explains heightened purchasing power allows consumers to buy more at lower prices.
General Trend:
- The overall trend in demand slopes downward.

Normal Goods vs. Inferior Goods:
- For normal goods, price decreases lead to higher consumption based on both income and substitution effects.
- For inferior goods, a price drop might not yield increased demand due to preference shifts towards better quality goods as income rises.

Understanding Angle Curves:
- Used to analyze how demand changes with varying income levels while keeping prices constant.
- Movement depicted through changes in the budget line which shifts right with increasing income but keeps its slope constant.
Graphical Example:
- Given values:
- Income (m) = 10,
- p1 = $1,
- p2 = $1,
- Relationship defined in terms of maximal purchase of good two when only good one is consumed.
Income Expansion Path:
- Describes how an increase in income leads to maximum consumption across goods, represented graphically.

Definition and Utility:
- Engel curve maps out how changes in income affect the quantity demanded of a good.
Data-Driven Analysis:
- Collecting data on household income versus spending on goods like Tesla demonstrates Engel curve behavior, illustrating how spending adapts to income changes.
- Example of plotting income categories against consumption behaviors showcases relationships in consumer behavior under changing financial circumstances.

Behavioral Expectations:
- Reflecting on how individuals allocate spending based on income ensures a robust understanding of economic responses.
- Changes in income leading to expected behavioral responses merit further inquiry into consumer preferences and elasticity.

Critical Interpretation:
- Reinforce connections between economic theories (like substitution and income effects) and their practical applications in market behavior.
- Emphasizing the need for analysis of goods classification (normal vs. inferior) provides insights into consumer decisions.