Welcome to On Statistics

In the realm of statistics, we often encounter questions that involve estimating a population proportion – the true percentage of individuals in a population possessing a specific characteristic. However, directly accessing the entire population is often impractical or impossible. This is where confidence intervals (CIs) come into play, offering a powerful tool for estimating the…

In the realm of data analysis, comparing two populations or groups often lies at the heart of our inquiries. Whether it’s examining the effectiveness of different teaching methods, assessing the growth rates of two companies, or comparing the average age of residents in two neighbourhoods, understanding the difference between the populations becomes crucial. However, relying…

In the realm of statistics, where data reigns supreme, drawing conclusions and making inferences often involves peering through a veil of uncertainty. While sample statistics like the mean give us a glimpse into the population parameters, they are inherently estimates and not the absolute truth. This is where confidence intervals (CI) come in, playing a…