Login

Contact Jeff

Email Updates
About
Stats Q&A
Calculators
Tutorials
Products
Home
View All Tutorials
The Standard Deviation :: Standard Deviation Quiz
5 Questions Total
Start
Finish
You are 0% Complete
If you have the variance, how do you get the standard deviation?
Take the reciprocal
Square it
Subtract the mean
Take the square root
Divide it by the sample size
View All Tutorials
How well did you understand this lesson?
Avg. Rating 7.79 (555)
Not at all
Neutral
Extremely
0
1
2
3
4
5
6
7
8
9
10
What didn't make sense?
Name
Email
Not Published
Comment
To prevent comment spam, please answer the following question before submitting (tags not permitted) :
What is 2 + 1:
(enter the number)
April 17, 2016  Yasser wrote:
set [4,10,12,2,15,5] mean = 48/6 = 8 variance = [(48)^2 + (108)^2 + (128)^2 + (28)^2 + (158)^2 + (58)^2] / n1 so variance = 130 / 5 = 26 std. dev = sqrt of variance so sqrt of 26 = 5.099
September 22, 2015  Noah Krause wrote:
I still don't get it
November 22, 2014  Kristen wrote:
I had a hard time understanding how you interpret the differences between samples Or at least understanding how to do so outside of the examples given.
May 8, 2009  JQ wrote:
On the questions at the end, when you ask us to calculate the standard deviation, you don't specify whether it is sample or population. If I am just given a small set of numbers, rather than told I have a sample drawn from a larger population, shouldn't I assume that that set is the complete set, and therefore use population SD?