Summarize Data to Return the Length by Group

03 data transform mutate summarize group byПодробнее

SQL Group By & Aggregation Functions for Data Analysis | Learn to Summarize DataПодробнее

Summarizing Data with Group By in Power QueryПодробнее

How to Use GROUP BY in SQL to Get Summary DataПодробнее

group and summarize data with dplyrПодробнее

Differences between GROUPBY and SUMMARIZEПодробнее

Mean, Median, and Mode of Grouped Data & Frequency Distribution Tables StatisticsПодробнее

Calculating summary statistics by group using dplyrПодробнее

R Tutorial: Grouping and summarizingПодробнее

Mastering Data Grouping in R with dplyr: A Guide to Summarizing VariablesПодробнее

Summarize Multiple Columns of data.table by Group in R (Example) | lapply, mean | data.table PackageПодробнее

Grouping and Summarizing Address Data in dplyrПодробнее

Summarizing Data by Group in Excel in 10 Minutes | Find the averages and standard deviationПодробнее

Use GROUP BY to summarize your SQL SELECT results - Part 1. | Essential SQLПодробнее

Group_by and summarize | Data untangled: transforming and cleaning data with R (lesson 5)Подробнее

Basic of creating DATA SUMMARY using AGGREGATION, GROUPING & ALIAS in SQL | BigQueryПодробнее

How to Group SQL Data by Intervals for Effective SummarizationПодробнее

13 - Grouping and summariesПодробнее

Setting the .groups option in summarize: Improving the readability of R your code (CC036)Подробнее