🇵🇹Portuguese Source WordCode: PT

Pontuação z

Pronunciation / Transliteration: põ.twaˈsɐ̃w z

🇬🇧 Direct English Meaning:
Z-Score/ziː skɔːr/
nounCEFR B2 (Upper)Top #1500 frequency
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🇵🇹 Example Sentence in Portuguese:

"Uma pontuação z de -2 indica que o valor está duas desvios padrão abaixo da média."

Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A statistical measurement that describes a value's relationship to the mean of a group of values, expressed in terms of standard deviations from the mean.

    "In a normal distribution, a z-score of 2 indicates that the value is two standard deviations above the mean."
  2. 2

    A method used in statistics to determine how far away a particular score is from the average score.

    "By calculating the z-score, researchers can identify outliers in their data set."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term 'z-score' originates from statistics, where 'z' represents the standard score in a normal distribution. It was first introduced in the early 20th century as a way to standardize scores across different scales, allowing for comparison of data points relative to the mean.

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