Why variance in R is different duplicate

0 votes
Why is R's variance different?
Jun 14, 2022 in Data Analytics by Avinash
• 1,260 points
561 views

1 answer to this question.

0 votes
There are usually two methods for calculating variance. One is 1/n * sum((x-mean(x)2), whereas the other is 1/(n-1) * sum((x-mean(x)2) The second is an unbiased variance estimator, which R employs.

I think the remarks concerning sample variance vs. population variance are a little misleading. The population variance is commonly conceived of as the population's fixed, unknown variance. We want to estimate that variance, therefore we use a sample of the data to do so, hence the term sample variance (which can be estimated in more than one way, as mentioned above).
answered Jun 14, 2022 by Sohail
• 3,040 points

Related Questions In Data Analytics

0 votes
1 answer
0 votes
1 answer

Check if the object(variable) is defined in R

You can use the exists(): > exists("toFindUnknown") [1] FALSE > ...READ MORE

answered Apr 17, 2018 in Data Analytics by Sahiti
• 6,370 points
760 views
0 votes
1 answer

Is there any way to check for missing packages and install them in R?

There are 2 options: Either you can use ...READ MORE

answered Apr 17, 2018 in Data Analytics by nirvana
• 3,130 points
840 views
0 votes
1 answer

How to find out the package version which is loaded in R?

You can use sessionInfo() to accomplish that. > ...READ MORE

answered Apr 18, 2018 in Data Analytics by zombie
• 3,790 points
733 views
0 votes
1 answer

Big Data transformations with R

Dear Koushik, Hope you are doing great. You can ...READ MORE

answered Dec 18, 2017 in Data Analytics by Sudhir
• 1,610 points
978 views
0 votes
2 answers

Transforming a key/value string into distinct rows in R

We would start off by loading the ...READ MORE

answered Mar 26, 2018 in Data Analytics by Bharani
• 4,660 points
1,068 views
0 votes
1 answer

Finding frequency of observations in R

You can use the "dplyr" package to ...READ MORE

answered Mar 26, 2018 in Data Analytics by Bharani
• 4,660 points
5,822 views
0 votes
1 answer

Left Join and Right Join using "dplyr"

The below is the code to perform ...READ MORE

answered Mar 27, 2018 in Data Analytics by Bharani
• 4,660 points
999 views
0 votes
1 answer

why the predict() function does have different rows in R

Alter this sentence: model = lm(train$latitude train$crashes) to lm(crashes ...READ MORE

answered Jun 24, 2022 in Data Analytics by Sohail
• 3,040 points
745 views
0 votes
1 answer

why the predict() function does have different rows in R

Alter this sentence: model = lm(train$latitude train$crashes) to lm(crashes ...READ MORE

answered Jun 24, 2022 in Data Analytics by Sohail
• 3,040 points
806 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