I'm sure this problem is easy, but the months are throwing me off. can someone help?
Month Jan Feb Mar Apr May June
students hired 3 2 4 2 6 0
(i) Determine the mean, the median, the mode, and the range for the above data.
(ii) Compute the first and the third quartiles
(iii) Compute the z-scores for the months of may.
i have attempted this but, i'm not sure if i'm doing it right