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
221 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
• 2,960 points

Related Questions In Data Analytics

0 votes
0 answers

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

I'm using linear regression to attempt and ...READ MORE

Jun 23, 2022 in Data Analytics by avinash
• 1,840 points
280 views
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
• 6,360 points
440 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
517 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
573 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
648 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
5,062 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
669 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
• 2,960 points
248 views
0 votes
1 answer

Use of $ and %% operators in R

According to help('percent in percent'), percent in ...READ MORE

answered Jun 23, 2022 in Data Analytics by Sohail
• 2,960 points
170 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