6-66
  Freq ....................................frequency (1 or List 1 to 26)
  Freq1 ..................................frequency of sample 1 (1 or List 1 to 26)
  Freq2 ..................................frequency of sample 2 (1 or List 1 to 26)
  Execute ..............................executes a calculation or draws a graph
o .........................................mean of sample
o
1 
 .......................................mean of sample 1
o
2 
 ........................................mean of sample 2
   n   .........................................size of sample (positive integer)
   n  
1 
 ........................................size of sample 1 (positive integer)
   n  
2 
 ........................................size of sample 2 (positive integer)
   p  
0 
 ........................................expected sample proportion (0 <  p  
0 
 < 1)
   p  
1 
 ........................................sample proportion test conditions
   x   (1-Prop  Z  Test) ................sample value ( x    0 integer)
   x   (1-Prop  Z  Interval) ...........data (0 or positive integer)
   x  
1 
 ........................................data value of sample 1 ( x  
1 
   0 integer)
   x  
2 
 ........................................data value of sample 2 ( x  
2 
   0 integer)
  s 
x 
 ........................................sample standard deviation (s 
x 
 > 0)
  s 
x  
1 
 .......................................standard deviation of sample 1 (s 
x  
1 
 > 0)
  s 
x  
2 
 .......................................standard deviation of sample 2 (s 
x  
2 
 > 0)
  XList ...................................list for  
x -axis data (List 1 to 26)
  YList ...................................list for  
y -axis data (List 1 to 26)
  C-Level ...............................confidence level (0    C-Level < 1)
  Pooled ................................pooling On (in effect) or Off (not in effect)
   x   (Distribution) ....................data
      (Distribution) ...................standard deviation (   > 0)
      (Distribution) ...................mean
 (Distribution)....................mean
  Lower (Distribution) ............lower boundary
  Upper (Distribution) ............upper boundary
L.List (Distribution) .............list for lower bound data (List 1 to 26)
U.List (Distribution) ............list for upper bound data (List 1 to 26)
   d f   (Distribution) ..................degrees of freedom ( df  > 0)
   n  : df  (Distribution) ...............numerator degrees of freedom (positive integer)
   d  : df  (Distribution) ...............denominator degrees of freedom (positive integer)
  Numtrial (Distribution) ........number of trials
   p   (Distribution)....................success probability (0    p    1)