CLASS INTERVAL
f
50 - 56
43-49
36 - 42
29-35
22 - 28
8-14

f
2
5
2
9
5
7
6
n=36

Class mark (×m)
fxm
<cf​


CLASS INTERVAL F50 56 4349 36 422935 22 28 814 F2529576n36Class Mark Mfxmltcf class=