CHS PICS
Mean µ 7.71 22.63
Stdev σ 9.61 8.07
ESL 098 min (x) 32 32
Z 2.53 1.16
Left area 0.9943 0.8772
Right area 0.0057 0.1228




Sample size n 224 505
Number who achieved degree admission 1.29 62.02




Top percentage we want to explore (area to right of z) 0.2 0.2
Area to left of z: 0.8 0.8
Z 0.84 0.84
Min score x above which 20% of students are found 15.8 29.42