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Normal (standardise)
z = (x − μ) / σ
Where: μ = mean, σ = standard deviation, x = value, z = z-score
Solved example
Given: mu = 7, sigma = 5, x = 10
Find: z (z-score)
- Formula: z = (-μ + x)/σ
- Substitute the values: z = (10 - 7)/5
- Result: z = 0.6
Answer: z = 0.6
Calculator
How to calculate Normal (standardise)
- Write down the formula: z = (x − μ) / σ.
- Note the known values (μ, σ, x).
- Substitute them and simplify to find z.
- Use the calculator above to solve for any letter.
Frequently asked questions
What is the formula for Normal (standardise)?
The formula is z = (x − μ) / σ, where μ = mean, σ = standard deviation, x = value, z = z-score.
What is Normal (standardise) when mu = 7, sigma = 5, x = 10?
z = 0.6. Substitute the values into z = (x − μ) / σ and simplify.