What is the preferred measure of central tendency for scores measured on an ordinal?

2-What is the preferred measure of central tendency for scores measured on an ordinal?

3- After 5 points are subtracted from every score, the sample mean is found to be M= 24

4-What is the sshape of the distribution for the following set of data?

5-A sample of n= 6 scores has a standard deviation of s= 3. What is the value of SS, the sum of the squared deviations, for this sample?