100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
Summary How to find standard deviations $18.39   Add to cart
Quickly navigate to
Preview
  2.  
  3. Mathematics

Summary

Summary How to find standard deviations

 0 view  0 purchase
  • Course
  • Mathematics
  • Institution

Remember when calculating variance to square each deviation so that positive and negative differences do not cancel each other out. When taking the square root of the variance to get the standard deviation, always check if the variance is positive or zero, since the square root of a neg...

[Show more]

Preview 1 out of 3  pages

Document information

  • June 11, 2024
  • 3
  • 2023/2024
  • Summary

Subjects

  • standard deviations
  • mode
  • mwdian
  • range

Written for

  • Secondary school
  • Mathematics
  • 1
All documents for this subject (2014)

Seller

avatar-seller
subasreeravi28

Content preview

How to Find the Standard Deviation, Variance, Mean, Mode, and
Range for any Data Set



Mean

The mean is the average of all the numbers in a data set and is
sometimes called the arithmetic mean. To calculate the mean,
follow these steps:

1. Add up all the numbers in the data set.

2. Divide the sum by the number of values in the data set.

Variance

The variance is a measure of how spread out the data points are
from the mean. To calculate the variance, follow these steps:

1. Find the mean of the data set.

2. Subtract the mean from each of the data points and square
the result (this is called the squared deviation).

3. Find the average of the squared deviations.

Standard Deviation

The standard deviation is the square root of the variance. The
standard deviation provides a measure of the typical spread of the
data set in the same units as the data.

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller subasreeravi28. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $18.39. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

76449 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$18.39
  • (0)
  Add to cart