--- loncom/html/adm/help/tex/Statistics_Overall_Key.tex 2005/06/16 23:08:13 1.7 +++ loncom/html/adm/help/tex/Statistics_Overall_Key.tex 2006/08/08 17:47:27 1.8 @@ -5,28 +5,28 @@ data about the problems currently in the \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. \[ \frac{\sqrt{ \sum{(Xi - Mean)^3} / \#Stdnts}}{\sigma^3} \] -\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 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. @@ -37,7 +37,7 @@ there were no attempts made on the probl \[ 1 - \frac{\#YES+\#yes}{Tries} \] -\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 contains the homework problem. The percent score of the bottom 25\% of @@ -48,18 +48,18 @@ poor students answered it correctly. Co all of the good students got the problem wrong and the bad students did 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 statistics. Individual student or section variations are not shown. \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: \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}} The mean, standard deviation, maximum, and minimum of the scores of @@ -67,8 +67,8 @@ 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{Count Mean}, \textbf{Count STD}, \textbf{Count Max}, \textbf{Count Min} -The mean, standard deviation, maximum, and minum count of correct +\item \textbf{Count Mean}, \textbf{Count STD}, \textbf{Count Max}, \textbf{Count Min}: +The mean, standard deviation, maximum, and minimum count of correct 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.