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Diff for /loncom/html/adm/help/tex/Statistics_Overall_Key.tex between versions 1.7 and 1.8

version 1.7, 2005/06/16 23:08:13 version 1.8, 2006/08/08 17:47:27
Line 5  data about the problems currently in the Line 5  data about the problems currently in the
   
 \begin{description}  \begin{description}
   
 \item{\textbf{\#Stdnts}} Total number of students attempting the problem.  \item{\textbf{\#Stdnts}}: Total number of students attempting the problem.
   
 \item{\textbf{Tries}} Total number of attempts to solve the problem.  \item{\textbf{Tries}}: Total number of attempts to solve the problem.
   
 \item{\textbf{Max Tries}} Largest number of attempts to solve the problem by a student.  \item{\textbf{Max Tries}}: Largest number of attempts to solve the problem by a student.
   
 \item{\textbf{Mean Tries}} Average number of attempts.  \item{\textbf{Mean Tries}}: Average number of attempts.
   
 \item{\textbf{S.D. tries}} Standard Deviation of the tries.  \item{\textbf{S.D. tries}}: Standard Deviation of the tries.
   
 \item{\textbf{Skew Tries}} Skewness of the students tries.  \item{\textbf{Skew Tries}} Skewness of the students' tries.
 \[ \frac{\sqrt{ \sum{(Xi - Mean)^3} / \#Stdnts}}{\sigma^3} \]  \[ \frac{\sqrt{ \sum{(Xi - Mean)^3} / \#Stdnts}}{\sigma^3} \]
   
 \item{\textbf{\#YES}} Number of students who solved the problem correctly.  \item{\textbf{\#YES}}: Number of students who solved the problem correctly.
   
 \item{\textbf{\#yes}} Number of students who solved the problem by override.  \item{\textbf{\#yes}}: Number of students who solved the problem by override.
   
 \item{\textbf{\%Wrng}} Percentage of students who tried to solve the problem but were unable to.  \item{\textbf{\%Wrng}}: Percentage of students who tried to solve the problem but were unable to.
   
 \item{\textbf{DoDiff}} Degree of Difficulty of the problem.    \item{\textbf{DoDiff}}: Degree of Difficulty of the problem.  
   
 This statistics gives a measure of how many attempts it took the  This statistics give a measure of how many attempts it took the
 students to get the problem correct.  Those students who did not get  students to get the problem correct.  Those students who did not get
 the problem correct are not counted.  A value close to 0 indicates  the problem correct are not counted.  A value close to 0 indicates
 most students who got the problem correct did so on the first attempt.  most students who got the problem correct did so on the first attempt.
Line 37  there were no attempts made on the probl Line 37  there were no attempts made on the probl
   
 \[ 1 - \frac{\#YES+\#yes}{Tries} \]  \[ 1 - \frac{\#YES+\#yes}{Tries} \]
   
 \item{\textbf{DoDisc}} Degree of Discrimination of the problem.  \item{\textbf{DoDisc}}: Degree of Discrimination of the problem.
   
 The students are grouped based on their scores on the sequence which   The students are grouped based on their scores on the sequence which 
 contains the homework problem.  The percent score of the bottom 25\% of  contains the homework problem.  The percent score of the bottom 25\% of
Line 48  poor students answered it correctly.  Co Line 48  poor students answered it correctly.  Co
 all of the good students got the problem wrong and the bad students did  all of the good students got the problem wrong and the bad students did
 well.  well.
   
 \item{\textbf{weight}} The weight of the problem in the course (``points'').  \item{\textbf{weight}}: The weight of the problem in the course (``points'').
 The value shown is the weight of the problem for the individual computing the  The value shown is the weight of the problem for the individual computing the
 statistics.  Individual student or section variations are not shown.  statistics.  Individual student or section variations are not shown.
   
 \end{description}  \end{description}
   
 \textbf{Sequence Statistics}, that is compiled statistics on problems based on  \textbf{Sequence Statistics}: Compiled statistics on problems based on
 their containing sequence, are also shown.  The following data are shown:  their containing sequence, are also shown.  The following data are shown:
   
 \begin{description}  \begin{description}
   
 \item{\textbf{\#Items}} The number of problem parts in the sequence.  \item{\textbf{\#Items}}: The number of problem parts in the sequence.
   
 \item{\textbf{Score Mean}, \textbf{Score STD}, \textbf{Score Max} \textbf{Score Min}}  \item{\textbf{Score Mean}, \textbf{Score STD}, \textbf{Score Max} \textbf{Score Min}}
 The mean, standard deviation, maximum, and minimum of the scores of  The mean, standard deviation, maximum, and minimum of the scores of
Line 67  the selected students on the given seque Line 67  the selected students on the given seque
   
 \item{\textbf{Score N}}  The number of the selected students who submitted answers to problem parts in the sequence.  \item{\textbf{Score N}}  The number of the selected students who submitted answers to problem parts in the sequence.
   
 \item \textbf{Count Mean}, \textbf{Count STD}, \textbf{Count Max}, \textbf{Count Min}   \item \textbf{Count Mean}, \textbf{Count STD}, \textbf{Count Max}, \textbf{Count Min}: 
 The mean, standard deviation, maximum, and minum count of correct  The mean, standard deviation, maximum, and minimum count of correct
 problem parts of the selected students on the given sequence.  problem parts of the selected students on the given sequence.
   
 \item \textbf{Count N} The number of the selected students who submitted answers to problem parts in the sequence.  \item \textbf{Count N} The number of the selected students who submitted answers to problem parts in the sequence.
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  Added in v.1.8

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