P1   P2   P3   P4   P5  Total
----------------------------------------
Out of     20   15   25   15   25  100.0
----------------------------------------
Max        20   15   23   15   25  87
Average    15   13   15    7    7  55.6
Median     16   15   17    8    6  56.5
Std. Dev.  3.6  3.2  5.1  4.7  5.7 15.7

Histogram (Total):

  25.000000 [min]
  28.100000 : *
  31.200000 : 
  34.300000 : *
  37.400000 : *
  40.500000 : ***
+ 43.600000 : ***
| 46.700000 : **
| 49.800000 : L**
| 52.900000 : ****
| 56.000000 : *****
A 59.100000 : M**
| 62.200000 : ***
| 65.300000 : ***
| 68.400000 : ***H*
+ 71.500000 : ****
  74.600000 : **
  77.700000 : ***
  80.800000 : 
  83.900000 : 
  87.000000 : *

Where A designates the location of the average, the bars ending in
+ plot the standard deviation, M stands for median, and L and H are
the high and low quartiles, respectively.