Lexical ambiguity in statistics: what do students know about the words association, average, confi- dence, random and spread? J Stat Educ 17.Kaplan, J. J., Fisher, D. G., & Rogness, N. T. (2009). Lexical ambiguity in statistics: What do students know about the words association, ...
Parameters in statistics are used to describe a population, not just one equation. For example, themeanandvarianceof a population are both parameters. The mean represents the average value within the population, while the variance tells us something about how spread out values are throughout the ...
Variance is a statistical measurement of the spread between numbers in a data set. It measures how far each number in the set is from themean(average), and thus from every other number in the set. Variance is often depicted by this symbol: σ2. It is used by both analysts and traders...
The normal distribution is a bell-shaped curve where data clusters symmetrically around the mean, useful in statistics and natural phenomena modeling.
The term "statistical significance" often pops up in research and data analysis, but what does it actually mean? At its core, statistical significance is a way to express how confident you can be that your findings are not just a fluke. It's like a stamp of reliability on your results,...
In addition, the growth of social media platforms has made it easier than ever for misinformation and disinformation to spread rapidly. Deepfakes, viral rumors, or manipulated content can influence public opinion and create social division. Educating students on digital citizenship not only protects th...
Correlation does not have units. Covariance always has units Correlation isn’t affected by changes in the center (i.e. mean) or scale of the variables Back to top Calculate covariance in Excel Covariance gives you a positive number if thevariablesare positively related. You’ll get a negative...
Regression (linear and logistic)is one of the most popular method in statistics. Regression analysis estimates relationships among variables. Intended for continuous data that can be assumed to follow a normal distribution, it finds key patterns in large data sets and is often used to determine how...
What Does Ecommerce Mean, and How Does it Work? Ecommerce (which stands for ‘electronic commerce’) is the process of trading online. It encompasses all the online activity involved in buying and selling products and services. This exchange could take place between two businesses (B2B) or be...
What descriptive statistic gives a measure of how spread the data is around the mean? What does it mean when a statistic is robust? In statistics, what exactly does it mean to be 95 % confident? What does independence mean in statistics? What type of statistical test is used if you d...