find the center of some well-know ring
1- mat(n, k) and mat(2,r) (mat is matrix and r is real numbers and k is field)

2- kg and z3s3 and z2d8 (k is field and g group )

3- endz(z6) ( end is endomorphism and z is integers numbers)

This assignment is past the original due date o this data is from a sample. calculate the mean, standard deviation, and variance 16.7 11.1 46.7 14.8 13.3 16.6 18.5 47.3 42,8 show the following answers to 2 decimal places. sample mean- sample standard deviation ( use the standard deviation above for your calculation.) sample variance ooops- now you discover that the data was actually from a population! so now you must give the population standard deviation.