Salutations!
What is the mean of the data set?
Mean means average.. therefore, you need to add up all the data set, and then divide by the total amount of numbers
So lets solve this!
Add up all the number -------
41+ 32+ 39+ 47+ 55= 214..
We have added all the number, and we got the answer as 214.
Now, we need to divide by the total amount of number.
214/ 55= 42. 8
Thus, your mean is 42.8
Hope I helped!