For Data Science Learners
R for Data Science
Sort Data in R With Examples, R is a powerful tool for data analysis and manipulation. Sorting data in R is a common task that involves arranging data in ascending or descending order based on one or more columns. This can be especially useful in exploratory data analysis, as it allows you to quickly identify…
KPSS Test in R, the KPSS test (Kwiatkowski-Phillips-Schmidt-Shin) is a statistical test used to determine whether a time series has a unit root or not. A unit root indicates that the time series is non-stationary, meaning that the mean and/or the variance of the series changes over time. The KPSS test is often used in…
Wald Test in R With Examples, A Wald test is a statistical test that compares the fit of two models, one nested within the other. The test involves estimating the difference between the two models, calculating the variance of that difference, and then comparing the difference to its estimated variance. In this article, we will…
Anderson-Darling Test in R, the Anderson-Darling Test is a statistical test used to determine whether a given dataset is drawn from a particular distribution, such as the normal distribution. In this article, we will demonstrate how to conduct an Anderson-Darling Test in R using inbuilt datasets. Formulation of the Hypothesis: Before conducting the Anderson-Darling Test,…
Jarque-Bera Test in R, the Jarque-Bera test is a statistical test used to determine whether a given dataset is distributed normally or not. It tests whether the skewness and kurtosis of the dataset are consistent with a normal distribution. In this article, we will demonstrate how to conduct a Jarque-Bera test in R with inbuilt…
Fisher’s exact test in R, Fisher’s exact test is a statistical test used to analyze the relationship between two categorical variables. It is used when the sample size is small and the expected counts of the contingency table are less than 5. In this article, we will demonstrate how to conduct Fisher’s exact test in…
One proportion Z Test in R, One proportion Z-Test is a statistical test that is used to determine whether the difference between observed and expected frequencies for a categorical variable is significant or due to chance. It is a hypothesis-testing method that helps researchers make inferences about a population based on a sample. In this…
Determine the significance of a mediation effect in R, the Sobel test is a statistical test to determine the significance of a mediation effect. A mediation effect occurs when the relationship between two variables (X and Y) is explained by the presence of a third variable (M). The Sobel test is used to determine whether…
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How to Display Percentages on Histogram in R, A histogram is one of the most commonly used charts to illustrate the distribution of a dataset. Histograms plot the frequency of observations of a variable using non-overlapping intervals, also called bin widths, on the horizontal axis and the count or percentage frequency on the vertical axis….
Pattern mining analysis in R is an essential technique for uncovering relationships and patterns in large datasets. It is a type of data mining that looks for patterns and connections within data sets to identify associations and relationships of association rules. Pattern mining analysis is often used in market basket analysis, where it is used…
