01
Press these keys
(→x→−→μ→)→÷→σ
Step 1 of 7. Press (.
02
Walkthrough
- 1Write formula
z=(x−μ)/σ.
- 2Use brackets
Enter (x−μ)÷σ so the entire difference is divided.
- 3Interpret sign
Positive z is above the mean; negative z is below; |z| counts standard deviations.
03
Worked example
For μ=50, σ=8, standardize x=60.
NORMAL FLOAT AUTO REAL MP
(60−50)/81.25Answerz=1.25.