Software package: R

Solutions in R (82)

Task	Solutions in R	Solutions in other software packages
How to add a polynomial term to a model	solution	1 (view)
How to add a transformed term to a model	solution	1 (view)
How to add an interaction term to a model	solution	None
How to add details to a plot	solution	1 (view)
How to analyze the sample means of different treatment conditions	using gplots and emmeans	1 (view)
How to check the assumptions of a linear model	solution	1 (view)
How to choose the sample size in a study with two population means	solution	1 (view)
How to compare two nested linear models	solution	1 (view)
How to compute a confidence interval for a mean difference (matched pairs)	solution	1 (view)
How to compute a confidence interval for a population mean	solution	2 (view)
How to compute a confidence interval for a population mean using z-scores	solution	1 (view)
How to compute a confidence interval for a regression coefficient	solution	1 (view)
How to compute a confidence interval for a single population variance	solution	1 (view)
How to compute a confidence interval for the difference between two means when both population variances are known	solution	1 (view)
How to compute a confidence interval for the difference between two means when population variances are unknown	solution	1 (view)
How to compute a confidence interval for the difference between two proportions	solution	1 (view)
How to compute a confidence interval for the expected value of a response variable	solution	1 (view)
How to compute a confidence interval for the population proportion	solution	1 (view)
How to compute a confidence interval for the ratio of two population variances	solution	1 (view)
How to compute adjusted R-squared	solution	1 (view)
How to compute covariance and correlation coefficients	solution	1 (view)
How to compute Fisher’s confidence intervals	solution	None
How to compute probabilities from a distribution	solution	3 (view)
How to compute R-squared for a simple linear model	solution	2 (view)
How to compute summary statistics	solution	3 (view)
How to compute the derivative of a function	solution	1 (view)
How to compute the power of a test comparing two population means	solution	1 (view)
How to compute the residuals of a linear model	solution	1 (view)
How to compute the standard error of the estimate for a model	solution	1 (view)
How to conduct a mixed designs ANOVA	solution	1 (view)
How to conduct a repeated measures ANOVA	using rstatix and tidyr and car	1 (view)
How to convert a text column into dates	solution	1 (view)
How to create a box (and whisker) plot	solution	1 (view)
How to create a data frame from scratch	solution	1 (view)
How to create a histogram	solution	1 (view)
How to create a QQ-plot	solution	2 (view)
How to create basic plots	solution	1 (view)
How to create bivariate plots to compare groups	using lattice and gplots	1 (view)
How to do a goodness of fit test for a multinomial experiment	solution	1 (view)
How to do a hypothesis test for a mean difference (matched pairs)	solution	1 (view)
How to do a hypothesis test for a population proportion	solution	1 (view)
How to do a hypothesis test for population variance	solution	None
How to do a hypothesis test for the difference between means when both population variances are known	solution	1 (view)
How to do a hypothesis test for the difference between two proportions	solution	1 (view)
How to do a hypothesis test for the mean with known standard deviation	solution	1 (view)
How to do a hypothesis test for the ratio of two population variances	solution	1 (view)
How to do a hypothesis test of a coefficient’s significance	solution	None
How to do a Kruskal-Wallis test	solution	1 (view)
How to do a one-sided hypothesis test for two sample means	solution	1 (view)
How to do a one-way analysis of variance (ANOVA)	solution	2 (view)
How to do a Spearman rank correlation test	solution	1 (view)
How to do a test of joint significance	solution	1 (view)
How to do a two-sided hypothesis test for a sample mean	solution	2 (view)
How to do a two-sided hypothesis test for two sample means	solution	2 (view)
How to do a two-way ANOVA test with interaction	solution	1 (view)
How to do a two-way ANOVA test without interaction	solution	1 (view)
How to do a Wilcoxon rank-sum test	solution	1 (view)
How to do a Wilcoxon signed-rank test	solution	1 (view)
How to do a Wilcoxon signed-rank test for matched pairs	solution	1 (view)
How to do basic mathematical computations	solution	5 (view)
How to find critical values and p-values from the normal distribution	solution	1 (view)
How to find critical values and p-values from the t-distribution	solution	1 (view)
How to fit a linear model to two columns of data	solution	3 (view)
How to fit a multivariate linear model	solution	1 (view)
How to generate random values from a distribution	solution	3 (view)
How to graph mathematical functions	solution	2 (view)
How to perform a chi-squared test on a contingency table	solution	2 (view)
How to perform a planned comparison test	using gmodels	None
How to perform an analysis of covariance (ANCOVA)	solution	1 (view)
How to perform pairwise comparisons	solution	1 (view)
How to perform post-hoc analysis with Tukey’s HSD test	using agricolae, solution	1 (view)
How to plot continuous probability distributions	solution	3 (view)
How to plot discrete probability distributions	solution	2 (view)
How to plot interaction effects of treatments	using ggpubr	1 (view)
How to predict the response variable in a linear model	solution	1 (view)
How to quickly load some sample data	solution	2 (view)
How to summarize a column	solution	2 (view)
How to summarize and compare data by groups	solution	1 (view)
How to test data for normality with Pearson’s chi-squared test	solution	None
How to test for a treatment effect in a single factor design	using perm	1 (view)
How to use Bonferroni’s Correction method	solution	None

Solutions needed in R

Task	Solutions in R	Solutions in other software packages
How to change axes, ticks, and scale in a plot	none yet (Want to submit one?)	1 (view)
How to compute the domain of a function	none yet (Want to submit one?)	1 (view)
How to compute the error bounds on a Taylor approximation	none yet (Want to submit one?)	1 (view)
How to compute the limit of a function	none yet (Want to submit one?)	1 (view)
How to compute the Taylor series for a function	none yet (Want to submit one?)	1 (view)
How to create symbolic variables	none yet (Want to submit one?)	1 (view)
How to define a mathematical sequence	none yet (Want to submit one?)	1 (view)
How to define a mathematical series	none yet (Want to submit one?)	1 (view)
How to do implicit differentiation	none yet (Want to submit one?)	1 (view)
How to find the critical numbers of a function	none yet (Want to submit one?)	1 (view)
How to find the critical points of a multivariate function	none yet (Want to submit one?)	1 (view)
How to graph a two-variable function as a surface	none yet (Want to submit one?)	1 (view)
How to graph curves that are not functions	none yet (Want to submit one?)	1 (view)
How to graph mathematical sequences	none yet (Want to submit one?)	1 (view)
How to isolate one variable in an equation	none yet (Want to submit one?)	1 (view)
How to solve an ordinary differential equation	none yet (Want to submit one?)	1 (view)
How to solve symbolic equations	none yet (Want to submit one?)	1 (view)
How to substitute a value for a symbolic variable	none yet (Want to submit one?)	1 (view)
How to test data for normality with the D’Agostino-Pearson test	none yet (Want to submit one?)	1 (view)
How to test data for normality with the Jarque-Bera test	none yet (Want to submit one?)	1 (view)
How to write a piecewise-defined function	none yet (Want to submit one?)	1 (view)
How to write an ordinary differential equation	none yet (Want to submit one?)	1 (view)
How to write and evaluate definite integrals	none yet (Want to submit one?)	1 (view)
How to write and evaluate indefinite integrals	none yet (Want to submit one?)	1 (view)
How to write and evaluate Riemann sums	none yet (Want to submit one?)	1 (view)
How to write symbolic equations	none yet (Want to submit one?)	1 (view)