Read the following passage and answer the items that follow the passage. Your answers to these items should be based on the passage only.
Passage-1 A single number for inflation is an aggregate across different commodities and services the price rise differs for different items of consumption. So, the single number is arrived at by assigning weights to different commodities and services. For WPL, the weights in production are used; for CPI, the consumption basket is used. But people are not homogeneous. The consumption basket is vastly different for the poor, the middle classes, and the rich. Hence, the CPI is different for each of these classes and a composite index requires averaging the baskets. Which one of the following statements best reflects the most logical, rational and crucial message conveyed by the passage?
The present calculation of inflation rate does not correctly measure price rise of individual item/commodity
Understanding Inflation Calculation from the Passage
The passage discusses how inflation is measured, explaining that a single number representing inflation is an aggregate value. It highlights the methods used, such as the Wholesale Price Index (WPI) which uses weights based on production, and the Consumer Price Index (CPI) which uses weights based on consumption baskets.
Key points from the passage include:
- Inflation is an aggregate measure across different items.
- The price rise for individual commodities or services differs.
- A single inflation number is calculated by assigning weights to different items.
- WPI and CPI use different weighting methods (production vs. consumption basket).
- Consumption baskets vary significantly for different groups of people (poor, middle class, rich).
- A composite CPI requires averaging these different consumption baskets.
The core message revolves around the nature of the single inflation number as an aggregate and how it is derived from varying price changes of individual items and differing consumption patterns.
Analyzing the Options
Let's evaluate each option based on the information provided in the passage:
Option 1: We must use WPI exclusively in measuring price rise and CPI should be done away with
The passage explains both WPI and CPI but does not advocate for the abolition of CPI or exclusive use of WPI. It merely describes how they are calculated and points out issues with the aggregate nature of CPI due to differing consumption baskets. This statement is not supported by the passage.
Option 2: The present calculation of inflation rate does not correctly measure price rise of individual item/commodity
The passage states, "A single number for inflation is an aggregate across different commodities and services the price rise differs for different items of consumption. So, the single number is arrived at by assigning weights to different commodities and services." This explicitly means the single aggregate number is an average or weighted sum, not a reflection of the price rise of any single, specific item. The passage's entire point about aggregation and weighting confirms that the single number doesn't represent individual price movements. This statement accurately reflects a crucial message conveyed by the passage.
Option 3: Inflation data under-presents services in the consumption basket
The passage mentions both "commodities and services" in relation to inflation calculation and consumption baskets but does not suggest that services are under-represented in the data. It focuses on the aggregation process and the diversity of consumption baskets among different groups, not the proportion of services included.
Option 4: Knowledge of inflation rate is not really of any use to anybody in the country
The passage discusses the calculation and limitations of the inflation rate but does not suggest that the data is useless. Understanding how it is calculated and its limitations is important for interpreting the data, but the passage does not imply the data itself has no utility.
Conclusion
Based on the analysis, Option 2 best captures the most logical, rational, and crucial message conveyed by the passage. The passage's detailed explanation of how a single inflation number is an aggregate derived from varying individual price changes strongly supports the idea that this single number does not accurately represent the price rise of each specific item or commodity.
Revision Table: Key Concepts
| Concept | Explanation from Passage | Significance |
|---|---|---|
| Single Inflation Number | Aggregate across different commodities/services. | Doesn't reflect individual item price changes. |
| Weights | Assigned to different items to arrive at the single number. | Influences the aggregate value. |
| WPI | Uses weights based on production. | Different calculation method than CPI. |
| CPI | Uses weights based on the consumption basket. | Reflects consumer prices but averaged across baskets. |
| Consumption Basket Diversity | Vastly different for poor, middle class, rich. | Makes a composite CPI an average of different realities. |
Additional Information: Inflation Measurement
Inflation measurement is a complex process aiming to capture the general increase in price level. The methods used, like WPI and CPI, provide valuable economic indicators but come with inherent limitations. Understanding that these are aggregate indices is crucial. They give an overall picture but cannot detail the price changes for every single good or service consumed or produced in the economy. This is particularly important when considering the impact of inflation on different segments of the population, as their spending patterns (consumption baskets) can be vastly different.
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Important Questions from Miscellaneous Topics
Which one of the following statements best reflects the critical message conveyed by the author of the passage?
With reference to the above passage, the following assumptions have been made:
I. No country needs to depend on ecosystems to boost national income.
II. Resource-rich countries need to share their resources with those of scant resources so as to prevent the degradation of ecosystems.
Which of the above assumptions is/are valid?Which one of the following statements best reflects the central idea of the passage?
With reference to the above passage, the following assumptions have been made:
I. Path-dependent green investments will eventually most likely benefit growth as well as public finances in a country like India.
II. If other green technologies follow the same pattern as that of solar energy, there will most likely be an easy green transition.
Which of the above assumptions is/are valid?Three prime numbers p, q and r, each less than 20, are such that p − q = q − r. How many distinct possible values can we get for (p + q + r)?
