Answer:
for eaxh x above the number isthe amount of times that number is going to repeat
x of 0 = 0
x x x of 4s = 4 4 4
and so on
to calculate the mean you have to add all the numbers up and divide it by the amount of numbers (there is 26 numbers)
0+4+4+4+5+5+5+5+5+5+5+5+6+6+6+7+8+8+8+8+8+9+9+9+10+10+10= 165
now we divide 165 by 26
165/26 = 6.34 (4 is smaller than 5 so 3 stays the same
6.3