Hello,

With reference to the following article:

There is an example under the head **What is a Decision Tree ? How does it work ?** which states that there are 30 students with three variables Gender (Boy/ Girl), Class( IX/ X) and Height (5 to 6 ft). 15 out of these 30 play cricket in leisure time. **Estimate who will play cricket?**

in the first step while splitting on gender we have worked out that out of 30 students there are 10 females ( 2 play cricket )and 20 males(13 play cricket. **Can someone tell me how has this math been worked out**

**snapshot attached**

Thanks!