Statistics - Persian

Questions posted on ST Forums:

• 'Statistics :

  usecols is not defined error

  00-01M 0-10S mhdashfaque
  
  
  Answer last updated on: June 22, 2019, 12:58 p.m.

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• Error Occured

  In[2]: L = np.loadtxt("student_record.txt", usecols=(3,4,5,6,7), delimiter=';')---------------------------------------------------------------------------FileNotFoundError                         Traceback (most recent call last)Input In [2], in <cell line: 1>()----> 1 L = np.loadtxt("student_record.txt", usecols=(3,4,5,6,7), delimiter=';')File C:\Phython 3.10\lib\site-packages\numpy\lib\npyio.py:1042, in loadtxt(fname, dtype, comments, delimiter, converters, skiprows, usecols, unpack, ndmin, encoding, max_rows, like)   1040     fname = os_fspath(fname)   1041 if _is_string_like(fname):-> 1042     fh = np.lib._datasource.open(fname, 'rt', encoding=encoding)   1043     fencoding = getattr(fh, 'encoding', 'latin1')   1044     line_iter = iter(fh)File C:\Phython 3.10\lib\site-packages\numpy\lib\_datasource.py:193, in open(path, mode, destpath, encoding, newline)    156 """    157 Open `path` with `mode` and return the file object.    158   (...)    189    190 """    192 ds = DataSource(destpath)--> 193 return ds.open(path, mode, encoding=encoding, newline=newline)File C:\Phython 3.10\lib\site-packages\numpy\lib\_datasource.py:532, in DataSource.open(self, path, mode, encoding, newline)    529     return _file_openers[ext](found, mode=mode,    530                               encoding=encoding, newline=newline)    531 else:--> 532     raise FileNotFoundError(f"{path} not found.")FileNotFoundError: student_record.txt not found.

  14-15M 10-20S unanswered 05__vaishnavi
  
  
  Question posted on: July 9, 2022, 7:44 p.m.

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• Python 3.6.3

  In[2]: L = np.loadtxt("student_record.txt", usecols=(3,4,5,6,7), delimiter=';')---------------------------------------------------------------------------FileNotFoundError                         Traceback (most recent call last)Input In [2], in <cell line: 1>()----> 1 L = np.loadtxt("student_record.txt", usecols=(3,4,5,6,7), delimiter=';')File C:\Phython 3.10\lib\site-packages\numpy\lib\npyio.py:1042, in loadtxt(fname, dtype, comments, delimiter, converters, skiprows, usecols, unpack, ndmin, encoding, max_rows, like)   1040     fname = os_fspath(fname)   1041 if _is_string_like(fname):-> 1042     fh = np.lib._datasource.open(fname, 'rt', encoding=encoding)   1043     fencoding = getattr(fh, 'encoding', 'latin1')   1044     line_iter = iter(fh)File C:\Phython 3.10\lib\site-packages\numpy\lib\_datasource.py:193, in open(path, mode, destpath, encoding, newline)    156 """    157 Open `path` with `mode` and return the file object.    158   (...)    189    190 """    192 ds = DataSource(destpath)--> 193 return ds.open(path, mode, encoding=encoding, newline=newline)File C:\Phython 3.10\lib\site-packages\numpy\lib\_datasource.py:532, in DataSource.open(self, path, mode, encoding, newline)    529     return _file_openers[ext](found, mode=mode,    530                               encoding=encoding, newline=newline)    531 else:--> 532     raise FileNotFoundError(f"{path} not found.")FileNotFoundError: student_record.txt not found.

  14-15M 10-20S unanswered 05__vaishnavi
  
  
  Question posted on: July 9, 2022, 7:40 p.m.

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• sudo command

  Sudo command is not  working , Please help me out....

  02-03M 0-10S 20001002020
  
  
  Answer last updated on: Oct. 16, 2021, 3:31 p.m.

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• statistics

  In [1]: sudo apt-get install python3-pip  File "<ipython-input-1-adffa9420756>", line 1    sudo apt-get install python3-pip           ^SyntaxError: invalid syntax

  02-03M 0-10S Adarsh1211
  
  
  Answer last updated on: May 11, 2021, 12:38 a.m.

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• statisticss

  what is the difference between np.sum(L,1) and np.sum(L,0) ? what is the concept behind this?also, what is meant by np.mean(:,1)?

  12-13M 0-10S sakshiST
  
  
  Answer last updated on: May 6, 2021, 11:46 a.m.

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• calculating mean

  why do we use np.mean(L,0) for calculating mean scored by all students in each subject.

  05-06M 30-40S midhath001@gmail.com
  
  
  Answer last updated on: March 15, 2021, 12:28 p.m.

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• OSError

  student_record.txt not found.

  04-05M 30-40S shraddhakb1893@gmail.com
  
  
  Answer last updated on: March 15, 2021, 12:09 p.m.

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• OSError

  student_record.txt not found.

  04-05M 30-40S shraddhakb1893@gmail.com
  
  
  Answer last updated on: March 15, 2021, 12:03 p.m.

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• Loading data error

  L=np.loadtxt("football.txt",usecols=(1,2),delimiter=',')Traceback (most recent call last):  File "<ipython-input-2-8d4e42947062>", line 1, in <module>    L=np.loadtxt("football.txt",usecols=(1,2),delimiter=',')  File "C:\Users\91808\anaconda3\lib\site-packages\numpy\lib\npyio.py", line 981, in loadtxt    fh = np.lib._datasource.open(fname, 'rt', encoding=encoding)  File "C:\Users\91808\anaconda3\lib\site-packages\numpy\lib\_datasource.py", line 269, in open    return ds.open(path, mode, encoding=encoding, newline=newline)  File "C:\Users\91808\anaconda3\lib\site-packages\numpy\lib\_datasource.py", line 623, in open    raise IOError("%s not found." % path)OSError: football.txt not found.present working directory 'C:\\Users\\91808'using spyder(python 3.8)

  11-12M 0-10S karandeprra19et@student.mes.ac.in
  
  
  Answer last updated on: Sept. 24, 2020, 11:58 a.m.

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• sudo Command

  sudo Command is not recognized as internal or external command in windowsHow to install numpy

  01-02M 0-10S rupalicdange_978
  
  
  Answer last updated on: July 15, 2020, 12:54 p.m.

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• mean and std of home and goals away

  the question doesn't specify for each player so shouldn't it be mean of home goals - np.mean(L[:,0]) and mean of goals away - np.mean(L[:,1])llly for std?

  10-11M 40-50S alpha_death_rider
  
  
  Answer last updated on: July 8, 2020, 6:16 p.m.

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• NumPy

  how to installed NumPy?steps

  01-02M 40-50S HITESH_NINAMA
  
  
  Answer last updated on: June 5, 2020, 2:28 p.m.

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• run command error

  TypeError                                 Traceback (most recent call last)<ipython-input-2-7027eda59818> in <module>----> 1 L = np.loadtxt("student_record.txt",usecols=(3,4,5,6,7), delimeter=';')TypeError: loadtxt() got an unexpected keyword argument 'delimeter'

  04-05M 0-10S chirag26oct
  
  
  Answer last updated on: May 26, 2020, 9:01 a.m.

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• loadtxt doubt

  In [50]: L=loadtxt("C:\Users\Monish Naware\Desktop\Archana\Python\football.txt",usecols=(1,2),delimiter=',')  File "<ipython-input-50-5d5ba460b8bf>", line 1    L=loadtxt("C:\Users\Monish Naware\Desktop\Archana\Python\football.txt",usecols=(1,2),delimiter=',')             ^SyntaxError: (unicode error) 'unicodeescape' codec can't decode bytes in position 2-3: truncated \UXXXXXXXX escape

  07-08M 0-10S archana.naware@gmail.com
  
  
  Answer last updated on: May 8, 2020, 10:07 a.m.

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• Difference between loadtxt() and numpy.loadtxt()

  In the previous tutorial we learned to use loadtxt() function without any library reference, here we numpy.loadtxt(). What is the difference?

  04-05M 20-30S RavisankarJ
  
  
  Answer last updated on: May 2, 2020, 2:25 p.m.

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• Precision and round off

  while calculating mean of marks of students using math formula as well as mean function, my answer is 35.4.but for both cases answer in tutorial is 35.999999999999...Why precesion changes? is there any mean to set precesion of the numbers?

  05-06M 50-60S gourihalde@gmail.com
  
  
  Answer last updated on: April 23, 2020, 10:15 p.m.

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• Different outputs are generating even though the same outputs are expected

  np.mean(L,0) it will calculate the mean along the columns. Instead of doing that, i was executed in two different lines by taking np.mean(L[0]) and np.mean(L[1]) then the expected output is as similar as the former one. but i am getting different results in both the scenarios. it was the same scenario for standard deviation also. What are the possible reasons for it?? 

  11-12M 40-50S madhavan.11601828@lpu.in
  
  
  Answer last updated on: April 21, 2020, 10:33 p.m.

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