The most common and most likely answer to this crossword clue is the 8 letter word OUTLIERS
O
U
T
L
I
E
R
S
More clues leading to the result OUTLIERS
Buddy explains!

The straight part
We know that "anomalies" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case anomalies = outliers.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does OUTLIERS mean?
OUTLIERS noun- A person or thing situated away from the main body or outside its proper place.
- A part of a formation separated from the rest of the formation by erosion.
- A value in a statistical sample which does not fit a pattern that describes most other data points; specifically, a value that lies 1.5 IQR beyond the upper or lower quartile.