4.5k views
5 votes
nkechi took a random sample of 101010 countries to study fertility rate (babies per woman) and life expectancy (in years). she noticed a strong negative linear relationship between those variables in the sample data. here is computer output from a least-squares regression analysis for using fertility rate to predict life expectancy:

2 Answers

3 votes

Final answer:

The subject is Mathematics, analyzing the relationship between fertility rate and life expectancy. Regression analysis provides insights into this relationship.

Step-by-step explanation:

The subject of this question is Mathematics, focusing on the analysis of fertility rate and life expectancy using least-squares regression analysis.

The student conducted a study on 101010 countries and noticed a strong negative linear relationship between fertility rate and life expectancy. The computer output from the regression analysis helps in understanding the relationship between these variables.

User Jens Wegar
by
8.1k points
2 votes

Final answer:

The student's question is about the relationship between fertility rates and life expectancy, highlighting a key demographic study area. Low fertility rates often correlate with higher life expectancy, reflecting factors like economic development and healthcare improvements. Demography studies these patterns to gain insights into population changes and their drivers.

Step-by-step explanation:

The student's question relates to the negative linear relationship between fertility rates and life expectancy across various countries, which is a key area of study in demography. Demographers are interested in three main factors that influence population growth: fertility rates, life expectancy, and net immigration.

The fertility rate is defined as the number of live births per woman during her child-bearing years and can be indicative of various social and economic factors.

A decrease in fertility rates is often observed in regions experiencing higher levels of industrialization and urbanization, leading to a higher standard of living.

As for the patterns found in different countries, there is considerable variability in both fertility rates and mortality rates, which are the key components of population demographics.

High fertility rates can be found in low-income nations, while more developed nations tend to have lower fertility rates. Furthermore, life expectancy is an important indicator of the overall health and well-being of a population, and it can vary greatly across different regions and countries.

By analyzing fertility and mortality rates together, researchers gain insight into the overall growth and demographic changes occurring within populations.

The decline in fertility rates witnessed in various parts of the world is linked with different factors such as economic development, education levels, healthcare improvements, as well as climate change, violence, and emigration.

User Taylor Kline
by
8.6k points