Update README.md

Added information som descriptive statistics.

README.md

@@ -43,6 +43,8 @@ Each data instance contains the following features: correct, wrong and category.
 {"correct": "Eva klatrer, og Ola går på ski.", "wrong": "Eva klatrer og Ola går på ski.", "category": 1}
 
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+The dataset consists of 840 sentences, 600 of which require commas to be grammatically correct, and 240 are correct without any commas. Of the 600 sentences that require commas, most need only one, while 207 require two commas.
+Five sentences utilize a comma as a decimal separator in addition to the grammatical commas.
 
 ### Data Fields