Q2 q1 q4 q3 year data Four charge q1, q2, q3 and q4, of same magnitude are fixed the x axis Quartile (q1, q2 & q3) for grouped frequency data
Four charge Q1, Q2, Q3 and Q4, of same magnitude are fixed the x axis



Q1 q3 q2 grouped quartile Q1 q2 q3 q4
Q2 q1 q4 q3 year data Four charge q1, q2, q3 and q4, of same magnitude are fixed the x axis Quartile (q1, q2 & q3) for grouped frequency data