version 1.2, 2004/05/10 13:59:40
|
version 1.3, 2004/07/12 19:29:02
|
Line 6 data about the problems currently in the
|
Line 6 data about the problems currently in the
|
\begin{itemize} |
\begin{itemize} |
|
|
\item \textbf{#Stdnts} |
\item \textbf{#Stdnts} |
|
|
Total number of students attempting the problem. |
Total number of students attempting the problem. |
|
|
\item \textbf{Tries} |
\item \textbf{Tries} |
|
|
Total number of attempts to solve the problem. |
Total number of attempts to solve the problem. |
|
|
\item \textbf{Max Tries} |
\item \textbf{Max Tries} |
|
|
Largest number of to solve the problem by a student. |
Largest number of to solve the problem by a student. |
|
|
\item \textbf{Mean Tries} |
\item \textbf{Mean Tries} |
|
|
Average number of tries. |
Average number of tries. |
|
|
\item \textbf{S.D. tries} |
\item \textbf{S.D. tries} |
|
|
Standard Deviation of the tries. |
Standard Deviation of the tries. |
|
|
\item \textbf{Skew Tries} |
\item \textbf{Skew Tries} |
|
|
Skewness of the students 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{DoDiff} |
|
Degree of Difficulty of the problem. |
|
\[ 1 - \frac{\#YES+\#yes}{Tries} \] |
|
|
|
\item \textbf{#YES} |
\item \textbf{#YES} |
|
|
Number of students who solved the problem correctly. |
Number of students who solved the problem correctly. |
|
|
\item \textbf{#yes} |
\item \textbf{#yes} |
|
|
Number of students who solved the problem by override. |
Number of students who solved the problem by override. |
|
|
\item \textbf{\%Wrng} |
\item \textbf{\%Wrng} |
|
|
Percentage of students who tried to solve the problem but were unable to. |
Percentage of students who tried to solve the problem but were unable to. |
|
|
|
\item \textbf{DoDiff} |
|
|
|
Degree of Difficulty of the problem. |
|
\[ 1 - \frac{\#YES+\#yes}{Tries} \] |
|
|
|
\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 |
|
the students is subtracted from the percent score the to top 25\% of |
|
the students. This yields a number from -1 to 1. 1.0 indicates |
|
all of the good students answered the problem correctly and none of the |
|
poor students answered it correctly. Conversely, a score of -1.0 indicates |
|
all of the good students got the problem wrong and the bad students did |
|
well. |
|
|
\end{itemize} |
\end{itemize} |