A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 5 years ago
How do you find the range, variance, and standard deviation of a set of data?
anonymous
 5 years ago
How do you find the range, variance, and standard deviation of a set of data?

This Question is Closed

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The range of a set is the largest value of the set minus the smallest value of the set. The variance: Make N the mean of the set, the variance is then (X0 + N)^2 + (X1 + N)^2 + ... (Xn + N)^2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0so the rage should be one number, correct?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Standard deviation is the square root of the variance.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Suppose we have set of reals S = {0, 2, 75, 2} The range is 75 2 = 77

dumbcow
 5 years ago
Best ResponseYou've already chosen the best response.0Range is max value  min value \[Variance = \frac{\sum_{}^{}(X  x_{i})^{2}}{n1}\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Thanks! I'm still confused with variance

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0Suppose we have set of reals S = {0, 2, 75, 2} The mean is S is (0 + 2 + 75  2) / 4 = 18.75 The variance is ((0 + 18.75)^2 + (2 + 18.75)^2 + (75 + 18.75)^2 + (18.75  2)^2) / (4  1)
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.