Skip to content
Mathify
Cette calculatrice est actuellement affichée en anglais pendant que sa traduction est en préparation.

Statistiques et probabilités

Calculatrice vérifiée avec une formule transparente

Statistiques et probabilités

Deviation Score Calculator.

Calculates the deviation score of a data point from the mean, showing how far and in which direction it lies.

Les résultats se mettent à jour en direct pendant que vous tapez.
ƒ

Vos entrées

Comment ça marche

  1. 1

    Enter the data point value (X).

  2. 2

    Enter the mean (μ) of the dataset.

  3. 3

    Subtract the mean from the data point.

  4. 4

    The result is the deviation score; positive means above the mean, negative means below.

data_point - mean

Questions fréquentes

What does a positive deviation score mean?

A positive deviation score indicates the data point is above the mean.

What does a negative deviation score mean?

A negative deviation score indicates the data point is below the mean.

What if the deviation score is zero?

A deviation score of zero means the data point equals the mean exactly.

Explorer cette catégorie de calculatrices

Statistiques et probabilitésParcourir tout

Résultats

Formule vérifiée

Deviation Score

15

Demander n'importe quoi

Estimation à titre indicatif uniquement — vérifiez les décisions importantes avec un professionnel approprié.

Comment ça marche

Calculates the deviation score of a data point from the mean, showing how far and in which direction it lies.

  1. Enter the data point value (X).
  2. Enter the mean (μ) of the dataset.
  3. Subtract the mean from the data point.
  4. The result is the deviation score; positive means above the mean, negative means below.

Formules

Les mathématiques derrière cette calculatrice, écrites pour que vous puissiez vérifier le résultat.

Deviation Score

Deviation = X - μ

The deviation score measures the distance of a single data point from the mean of a dataset.

Example:

Input: X = 85, μ = 70

Calculation: 85 - 70

Result: 15

Cas d'utilisation réels

Où ce calcul apparaît dans la vie quotidienne.

Understanding individual performance

Compare a student's test score to the class average to see how far above or below they performed.

Example: Score 85 vs class mean 70 gives +15.

Quality control

Check if a measurement deviates from the target value in manufacturing processes.

Example: Measured 50 vs target 60 gives -10.

Data analysis

Quickly assess how unusual a data point is relative to the central tendency.

Example: A deviation of 0 means the point is exactly average.

Conseils et erreurs courantes

Tips

  • Use the deviation score to see the direction of difference, not just the magnitude.
  • Combine deviation scores with standard deviation to understand relative standing.
  • Remember that deviation scores sum to zero across all data points in a dataset.

Common Mistakes to Avoid

  • Forgetting to subtract the mean from the data point (order matters).
  • Confusing deviation score with absolute deviation; the sign is important.
  • Using the population mean when only a sample mean is available.

Hypothèses et limites

  • Use the stated inputs and units.
  • Results are estimates for planning and education.
  • Check measurements and source data before making an important decision.