Answer: Median = 3, Mean = 6.45, Mode = 1.
Explanation:
Since we have given that
15,3, 11, 15,1,14,7,2,1,1,2
As we know the formula for "Mean" :

Mean = 6.45
Similarly, we know the formula for "Median":
First we write it in ascending order:
1,1,1,2,2,3,7,11,14,15,15
![Me=((n+1)/(2))^(th)\\Me=(11+1)/(2)^{th]\\Me=(12)/(2)^{th]\\Me=6^(th)\\Me=3](https://img.qammunity.org/2017/formulas/mathematics/high-school/3dbx8yc9ej5dmzspyv3j48yjp9xu07vlap.png)
Median = 3
Mode is the number which has occurred mostly, has the highest frequency.
Mode = 1
Hence, Median = 3, Mean = 6.45, Mode = 1.