Ratio Method Assumption for Population Projection
The ratio method is a demographic technique used to forecast population changes. It relies on historical relationships between different population groups or areas.
Understanding the Core Assumption
When using the basic ratio method for population projection, the central assumption concerns the stability of proportions over time. Specifically, it looks at the ratio of a component population (e.g., a city's population) to a larger, related population (e.g., the national population).
- The method assumes that the historical ratio observed between these populations will continue into the future.
- This directly implies that the proportion, or share, of the component population relative to the larger population is expected to remain unchanged.
Therefore, the key assumption tested in the question is that the Share of units remain same.
Important Questions from Forecasting
The correlation coefficient between two variables X and Y is found to be 0.6. All the observations on X and Y are transformed using the transformations U = 2 – 3X and V = 4Y + 1. The correlation coefficient between the transformed variables U and V will be
Which of the following lines is known as the trend line?
An XYZ television supplier found a demand of 200 sets in July, 225 sets in August and 245 sets in September. Find the demand forecast for the month for the month of October using simple average method.
Name the human resource demand (need) forecasting technique, which solicits estimates of personnel needs from a group of experts, usually managers. The HRP experts act as intermediaries, summarise the various responses and report the findings back to the experts. The experts are surveyed again after they receive this feedback. Summaries and surveys are repeated until the experts' opinions begin to agree. The agreement reached is the forecast of the personnel needs.
Select the correct option :
Which of the following is a technique used for forecasting?
