How the RRB ALP & Technician Normalization Calculator Works
The calculator uses a z-score style formula similar to RRB’s published normalization approaches that compare your shift’s mean and standard deviation with the overall distribution and then rescale your raw marks.
This mirrors the idea behind normalization used in multi-shift RRB CBTs so that candidates from easier and tougher shifts are placed on a comparable scale for merit and cutoff decisions.
- RRB ALP CBT 1 is a 75-mark online test with questions from Mathematics, General Intelligence & Reasoning, General Science and General Awareness, with 1 mark per question and 1/3 negative marking.
- CBT 2 (Part A and Part B) can carry up to 175 marks overall, again with 1 mark per question and 1/3 negative marking in many notifications.
- The calculator takes raw marks (X), your shift average and SD (M1, S1) and the overall average and SD (M2, S2) to map your score on a normalized scale conceptually similar to Xn = (S2/S1) × (X − M1) + M2.
This gives you a clear sense of where you might stand after normalization without trying to exactly reproduce every small implementation detail of RRB’s official formula.