Confidence level and significance level are two important concepts in statistical hypothesis testing. The confidence level measures how confident we are that our conclusions are correct. In contrast, the significance level (also called alpha value) is the probability of rejecting the null hypothesis when it is true (Type I error).Significance LevelThe significance level, also known

In hypothesis testing, two types of errors can occur: type I and type II. These errors refer to the incorrect rejection or acceptance of the null hypothesis respectively.Type I Error (Alpha)A type I error occurs when the null hypothesis is true but is rejected in favour of the alternative hypothesis. This error is also known

In statistics, the null and alternative hypotheses are two mutually exclusive and exhaustive hypotheses used in hypothesis testing to evaluate the evidence in a sample. The null hypothesis represents the default assumption that no significant difference or relationship exists between the studied variables. In contrast, the alternative hypothesis represents the claim or hypothesis the researcher is

Hypothesis testing is a statistical procedure that allows us to test assumptions or beliefs about a population based on sample data. There are two main approaches to hypothesis testing:Traditional approach andThe p-value approach.In the traditional approach, we find the critical statistics (based on a predetermined significance level) and decide to reject or fail to reject the

Hypothesis testing is a statistical procedure that allows us to test assumptions or beliefs about a population based on sample data. It is a statistical procedure that is used to determine whether a hypothesis about a population parameter is supported by the evidence in a sample. It helps us determine the likelihood that our assumptions

A normal probability plot is a graphical representation of a data set used to assess whether the data follows a normal (bell-shaped) distribution. It is similar to a quantile-quantile plot (Q-Q Plot), which plots the quantiles of the data set against the quantiles of a normal distribution with the same mean and standard deviation as