Icon

06 Aggregations

06 Aggregations
Exercise: GroupBy1) Read the adult.csv file by executing the CSV Reader node2) Calculate the total number of rows and average age by gender 3) Calculate the modes of all string columns separately for each native country4) Calculate - the number of missing values in the occupation column- the number of non-missing rows in the occupation column- the number of rows in the occupation column- the number of rows in the marital-status column Notice that the last two aggregations should provide the same numbers! Exercise: Pivoting1) Read the adult_binned.csv file by executing the CSV Reader node2) Calculate the number of people in groups according to their work class and age bin- What is the most common combination of age bin and work class? <35 years of age andPrivate- How many people belong to this group? 32549 people3) Calculate the mode of education level in groups according to their work class and age bin- What is the most widespread education level in the private workclass independently of theage bin? HS-grad Read adult.csvRead adult_binned.csvNode 32Node 33Node 34Node 35Node 36 CSV Reader CSV Reader GroupBy GroupBy GroupBy Pivoting Pivoting Exercise: GroupBy1) Read the adult.csv file by executing the CSV Reader node2) Calculate the total number of rows and average age by gender 3) Calculate the modes of all string columns separately for each native country4) Calculate - the number of missing values in the occupation column- the number of non-missing rows in the occupation column- the number of rows in the occupation column- the number of rows in the marital-status column Notice that the last two aggregations should provide the same numbers! Exercise: Pivoting1) Read the adult_binned.csv file by executing the CSV Reader node2) Calculate the number of people in groups according to their work class and age bin- What is the most common combination of age bin and work class? <35 years of age andPrivate- How many people belong to this group? 32549 people3) Calculate the mode of education level in groups according to their work class and age bin- What is the most widespread education level in the private workclass independently of theage bin? HS-grad Read adult.csvRead adult_binned.csvNode 32Node 33Node 34Node 35Node 36 CSV Reader CSV Reader GroupBy GroupBy GroupBy Pivoting Pivoting

Nodes

Extensions

Links

Download

To use this workflow in KNIME, download it from the below URL and open it in KNIME:

Download Workflow
Created by: Maarit Laukkanen
Created at: 2020-04-20
On NodePit since: 2022-02-26
Last update: 2024-11-21
Created with KNIME version: v4.5.1
Tags: aggregationgrouppivotgroupby

Deploy, schedule, execute, and monitor your KNIME workflows locally, in the cloud or on-premises – with our brand new NodePit Runner.

Try NodePit Runner!