The post Filtering for Unique Values in R- Using the dplyr appeared first on Data Science Tutorials Filtering for Unique Values in R, Using the dplyr package in R, you may filter for unique values in a data frame using the following methods. Method 1: In one column, filter for unique ... [Read more...]

The post Crosstab calculation in R appeared first on Data Science Tutorials Crosstab calculation in R, To create a crosstab using functions from the dplyr and tidyr packages in R, use the following basic syntax. df %__%   group_by(var1, var2) %__%   tally() %__%   spread(var1, n) The examples below demonstrate how to ... [Read more...]

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The post droplevels in R with examples appeared first on Data Science Tutorials droplevels in R with examples, To remove unneeded factor levels, use R’s droplevels() function. This function comes in handy when we need to get rid of factor levels that are no longer in use as a ... [Read more...]

The post Cumulative Sum calculation in R appeared first on Data Science Tutorials Cumulative Sum calculation in R, using the dplyr package in R, you can calculate the cumulative sum of a column using the following methods. Best online course for R programming – Data Science Tutorials Approach 1: Calculate Cumulative Sum ... [Read more...]

The post How to Count Distinct Values in R appeared first on Data Science Tutorials How to Count Distinct Values in R?, using the n_distinct() function from dplyr, you can count the number of distinct values in an R data frame using one of the following methods. With the ... [Read more...]

The post Count Observations by Group in R appeared first on Data Science Tutorials Count Observations by Group in R, want to count the number of observations by the group. Fortunately, the count() function from the dplyr library makes this simple. Using the data frame below, this tutorial shows numerous ... [Read more...]

The post How to add columns to a data frame in R appeared first on Data Science Tutorials How to add columns to a data frame in R?, To add one or more columns to a data frame in R, use the mutate() function from the dplyr package. With the ... [Read more...]

The post How to Remove Columns from a data frame in R appeared first on Data Science Tutorials Remove Columns from a data frame, you may occasionally need to remove one or more columns from a data frame. Fortunately, the select() method from the dplyr package makes this simple. Remove ... [Read more...]

The post Remove Rows from the data frame in R appeared first on Data Science Tutorials Remove Rows from the data frame in R, To remove rows from a data frame in R using dplyr, use the following basic syntax. Detecting and Dealing with Outliers: First Step – Data Science Tutorials 1. ... [Read more...]

The post Arrange the rows in a specific sequence in R appeared first on Data Science Tutorials Arrange the rows in a specific sequence in R, Frequently, you’ll want to arrange the rows in a data frame in R in a specified order. Fortunately, the arrange() function from the ... [Read more...]

The post Arrange Data by Month in R with example appeared first on Data Science Tutorials Arrange Data by Month in R, To easily arrange data by month, use the floor_date() function from the lubridate package in R. The following is the fundamental syntax for this function. library(tidyverse) ... [Read more...]

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The post How to compare variances in R appeared first on Data Science Tutorials How to compare variances in R?, The F-test is used to see if two populations (A and B) have the same variances. When should the F-test be used? A comparison of two variations is useful in ... [Read more...]

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The post Two Sample Proportions test in R-Complete Guide appeared first on Data Science Tutorials Two Sample Proportions test in R, To compare two observed proportions, the two-proportions z-test is utilized. This article explains the fundamentals of the two-proportions *z-test and gives practical examples using R software. We have two ... [Read more...]

The post Calculate the P-Value from Chi-Square Statistic in R appeared first on Data Science Tutorials Calculate the P-Value from Chi-Square Statistic in R, You’ll get a Chi-Square test statistic every time you run a Chi-Square test. The p-value associated with this test statistic can then be used to ... [Read more...]

The post Calculate the p-Value from Z-Score in R appeared first on Data Science Tutorials Calculate the p-Value from Z-Score in R, In statistics, we frequently want to know the p-value associated with a specific z-score obtained from a hypothesis test. We can reject the null hypothesis of our hypothesis ... [Read more...]

The post One sample proportion test in R-Complete Guide appeared first on Data Science Tutorials One sample proportion test in R, when there are just two categories, the one proportion Z-test is used to compare an observed proportion to a theoretical one. This article explains the fundamentals of the one-proportion ... [Read more...]