How can I calculate mean per group in a data frame

0 votes
May 24, 2018 in Data Analytics by shams
 • 3,670 points • 3,970 views

1 answer to this question.

0 votes

You can use aggregate function for calculating mean per group.

aggregate(d[, a:b], list(d$Name), mean)
Here we will calculate the aggregate of some columns a and b of dataframe d, grouping by d$Name, and applying the mean function.

answered May 24, 2018 by zombie
 • 3,790 points

Related Questions In Data Analytics

0 votes
1 answer

How to calculate group mean and assign it to new data in R

You can use something like this: df$grp.mean.values <- ...READ MORE

answered Jun 27, 2018 in Data Analytics by Sahiti
 • 6,370 points • 1,905 views
+1 vote
2 answers

How can I get experience in Data Science as a fresher?

Work on projects of your own. It’s tough, ...READ MORE

answered Aug 9, 2018 in Data Analytics by Abhi
 • 3,720 points • 901 views
0 votes
1 answer

How to use a function to repeat a set of procedures on specific set of columns in a data frame?

You can parse the strings to symbols. ...READ MORE

answered Apr 3, 2018 in Data Analytics by kappa3010
 • 2,090 points • 1,652 views
+1 vote
2 answers

How to sort a data frame by columns in R?

You can use dplyr function arrange() like ...READ MORE

answered Aug 21, 2019 in Data Analytics by anonymous
 • 33,030 points • 1,838 views
0 votes
1 answer

How to convert a list to data frame in R?

Let's assume your list of lists is ...READ MORE

answered Apr 12, 2018 in Data Analytics by nirvana
 • 3,130 points
edited Apr 12, 2018 by nirvana • 22,135 views
0 votes
1 answer

How to find out the sum/mean for multiple variables per group in R?

You can use the reshape2 package for ...READ MORE

answered Apr 12, 2018 in Data Analytics by DataKing99
 • 8,250 points • 3,860 views
0 votes
2 answers

How to remove rows with missing values (NAs) in a data frame?

Hi, The below code returns rows without ...READ MORE

answered Aug 20, 2019 in Data Analytics by anonymous
 • 33,030 points • 14,790 views
0 votes
1 answer

How to drop factor levels in a subsetted data frame?

You can use factor(ff) to drop levels ...READ MORE

answered Apr 17, 2018 in Data Analytics by kappa3010
 • 2,090 points
edited Apr 17, 2018 by kappa3010 • 5,439 views
+1 vote
2 answers

How can I drop columns by name in a data frame ?

We can Drop Columns by name in ...READ MORE

answered Apr 14, 2018 in Data Analytics by zombie
 • 3,790 points • 28,465 views
0 votes
1 answer

How to convert tables to a data frame in R ?

> trial.table.df <- as.data.frame(trial.table) //assuming that trial.table ...READ MORE

answered Apr 20, 2018 in Data Analytics by zombie
 • 3,790 points • 7,624 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP
"PMP®","PMI®", "PMI-ACP®" and "PMBOK®" are registered marks of the Project Management Institute, Inc. MongoDB®, Mongo and the leaf logo are the registered trademarks of MongoDB, Inc.