Find the mean of the following distribution:

If the mean of the following data is 15, find p:

Find the mode of the following data:

1, 3, 5 , 7, 3,

5, 4, 7, 2, 6,

7, 12, 10, 11, 3,

7, 8, 6, 7, 7,

4, 2, 11, 7, 15

Find the median of the following data:

18, 37, 24, 59, 41, 56, 63, 45, 57, 29

190. The mean age of 10 students of a class is 15 years. A student of age 14 years leaves the class and in his place age of their teacher is counted. Thus the mean age of group increased to 16. Find the age of the teacher.