January 29, 2021 Significance of Spearman’s Rank Correlation How can the significance of Spearman’s rank correlation be tested? Let us assume Ho:ρs=0 vs H1=ρs≠0 The test statistics is t=[rs*SQRT(n-2)] / SQRT(1- rs2)…
November 28, 2020 Normality Test in R Normality Test in R:-In statistics methods is classified into two like Parametric methods and Nonparametric methods. The majority of the test like correlation, regression,…
November 26, 2020 How to do data reshape in R? What is mean by data reshaping? Data Reshaping in R is about changing the structure of the data into different format. In R taking…
November 14, 2020 Correlation Analysis in R? Correlation Analysis in R? To obtain a measure of the relation between X and Y independent of units of measurements. Karl Pearson in 1890 developed…
November 7, 2020 Random Forest Classification Model in R Why Random Forest classification Model in R? Random forest regression model getting model accuracy is very difficult in some cases, the alternative is to…
November 5, 2020 Random Forest Model in R The random forest model in R is a highly useful tool in analyzing predicted outcomes for a classification or regression model. The main idea…
September 25, 2020 Chi-Square distribution examples Chi Square distribution examples an overview, In the test hypothesis, it is usually assumed sample drawn from a known distribution like binomial, Poisson, normal,…
September 24, 2020 Discriminant analysis in r Discrimination tests are more important in sensory analysis. The main idea behind sensory discrimination analysis is to identify any significant difference or not. …
September 22, 2020 paired t test tabled value vs p-value When do you use paired t test and how to apply the same in practical situation? In this article we will talk about paired…
September 19, 2020 t-test in R Student’s t test is the deviation of estimated mean from its population mean expressed in terms of standard error. In this article talking about…
