arrays - Standard Deviation for row in table python -

-

What I'm trying to do is calculate the standard deviation of each line in the table row, everything is imaginable Have tried to execute it correctly, but it has not received it.

The array looks like this 

  array = [[4, 6, 1, -3, -12], [9, 14, -4, 32, 0 ], [3, 12, -2, 8], [4, 4, 4, 4, 4]]   
 Python Code:  
  array From file import array to row: mean = sum (line) / lane (line) print ("STD dev =", (amount x (x-mean) ** 2.0 for x in line) / float (lane STD Dev = 12.6237870704476 STD Dev = 9.286549412 99512 STD Dev = 0.0    STD Dev = 6.368673331236263 STD Dev = 12.6237870704476 STD Dev = 9.286549412 99512 STD Dev = 0.0 < / Code>   
 
 
 Already like this To get the standard deviation of each line of the  array  which it does this: [16] In: [16] Import as NP: array = [[4, 6, 1, -3, -12], [10, 14, -4, 32, 0], [22, -3, 10, -2, 8], [3, 4, 4, 4, 2]] [18]: Np.array (array) .std (1) out [18]: array ([6.37, 12.61, 9.12, 0.8]) By chance, if we have  Np.array (Array) .std (0) , we will get the standard deviation of each column.  
 without  numpy   
 with Python 3 and an imported module:  
  array = [[4, 6, 1, -3, -12], [10, 14, -4, 32, 0], [22, 3 = 10, -2, 8], [3, 4, 4, 4, 2]] row in array For: = zodiac sign / line (line) print ("STD dev =", (sum (x-mid) ** 2.0 for x in line) / float (line (line)) ** 0.5 )   
 This produces the output:  
  STD dev = 6.368673331236263 STD dev = 12.611106216347558 ​​STD dev = 9.121403400793104 STD dev = 0.8   
 optional formula Based on the circumstances, the formula for standard deviation is either in AI or  n  or  n-1  in the place where  N  The number of data points is the solution using the above calculation  n   n-1 :  
  array = [ [4, 6, 1, -3, -12], [9, 14, -4, 32, 0] for line in array, [22, -3, 12, -2, 8], [4, 4] , 4, 4, 4]] Mean = sum (row) / len (line) print ("STD dev =", (z = 2.0) for x in line 2.0) / float (line (line) -1)) ** 0.5)   
 This equation The result is:  
  STD dev = 7.120393247567159 ST DEV = 14.11382301150188 STD dev = 10.382677881933928 STD dev = 0.0

Comments

Post a Comment

Popular posts from this blog

php - PDO bindParam() fatal error -

-
I am trying to learn PDO, now I have written this small code, but it gives me a serious error: < P> Fatal error: Call a member function at a non-object dot () ... $ con = new mysqli ("127.0.0.1", "root", "", "csvdangercheck"); $ Query = $ con- & gt; ("Id,` var1`, `var2`) values ​​(" id,: var1,: var2) ";); $ query- & gt; bypass pattern (': id', $ id); $ query- & gt; BindParam (': var1', $ VAL1); $ Query- & gt; bindParam (': var2', $ val2); $ Query-> Executed (); I Trying to use print_r ($ con-> errorInfo ()) but Fatal error: Undefined method mysqli :: errorInfo ( ) ... can someone tell me what am I missing? Flaffeh said, you have PDO Missing Mysqy, try it: $ con = new PDO ('mysql: host = 127.0.0.1; dbname = csvdangercheck', 'root', '');
Read more

logging - How can I log both the Request.InputStream and Response.OutputStream traffic in my ASP.NET MVC3 Application for specific Actions? -

-
For a specific set of tasks, I need to log in to the incoming request inputstream as well as outgoing response. is. I am using an ActionFilterAttribute for this and overriding the OnActionExecuted and OnResultExecuted methods. So I'm starting with this idea ... Public category ActionLoggerAttribute: ActionFilterArrbit {Public Override Zero On-Offed Execution (ActionActioned Contact Filter Filter) {base.OnActionAxecuted (FilterContext); HttpRequestBase request = filterContext.HttpContext.Request; // TODO: Log the request. InputStream} Public Override Zero OnResultExecuted (ResultExecutedContext FilterContext) {base.OnResultExecuted (filterContext); HTTPRPSPointBase Response = FilterContacts Hpptex response; // TODO: Log on Response.OutputStream}} Ideally I'll hook it up with enterprise library logging because I'm already using it for error logging. Am I reaching the input and output stream at the right time? Can I easily use the Enterprise Library to log i
Read more

java - Why my included JSP file won't get processed correctly? -

-
I am trying to create Java web framework (and learning), and on the basis of 'Code Generator In the process of making the material view of the database in the process of development, I stumbled into a difficulty, which I do not know how to solve it. First of all, I want the following index.jsp : & lt; Body & gt; Use all pages to be created. & Lt;% @ include file = "header.jsp"% & gt; & Lt; Hours / & gt; & Lt;% @ included file = "body.jsp"%> & Lt; Hours / & gt; & Lt;% @ include file = "footer.jsp"% & gt; & Lt; / Body & gt; And, in body.jsp , I should have it like this: & lt; Jsp: include page = "$ {Application_modul}"%> Where application_modul is an attribute defined in its controller: request.setAttribute ("application_modul", "USER_ACCOUNT \\ ' View_user_account.jsp "); This file can be found properly, but the processed JSP does
Read more