Minor changes.
diff --git a/docs/Quantiles/MomentsSketchStudy.md b/docs/Quantiles/MomentsSketchStudy.md
index 848fcf0..4374013 100644
--- a/docs/Quantiles/MomentsSketchStudy.md
+++ b/docs/Quantiles/MomentsSketchStudy.md
@@ -23,7 +23,7 @@
* "The moments sketch runs into numeric stability issues past <i>k</i> ≥ 15 on some datasets." Page 9, Section 6.2.2
* "The moments sketch ... is most useful in datasets without strong discretization ... The maximum entropy principle is less accurate when there are clusters of discrete values in a dataset." Page 2, Section 1.
-Unfortunately, real data can be quite ugly as it can be highly skewed and with lots of zeros, nulls, and sometimes negative values.
+Unfortunately, real data can be quite ugly as it can be highly skewed and with lots of zeros, nulls, gaps, and sometimes negative values.
## The Input Data
The data file used for this evaluation, *streamA.txt*, is real data extracted from one of our back-end servers. It represents one hour of web-site time-spent data measured in milliseconds. The data in this file has a smooth and well-behaved value distribution with a wide dynamic range. It is a text file and consists of consecutive strings of numeric values separated by a line-feeds. Its size is about 2GB.
