z-distribution
[/zɛd dɪstrɪˈbjuːʃən/ or /zi dɪstrɪˈbjuːʃən/]
nounfemininepl: z-distributions
distribuição z
1. A probability distribution that represents standardized values in statistics, derived from the normal distribution with mean 0 and standard deviation 1
The z-distribution is essential for calculating confidence intervals and hypothesis testing in statistics.
A distribuição z é essencial para calcular intervalos de confiança e testes de hipóteses em estatística.
2. The standard normal distribution used to determine how many standard deviations a data point is from the mean
Using the z-distribution table, we found that a z-score of 1.96 corresponds to a 95% confidence level.
Usando a tabela de distribuição z, descobrimos que um z-score de 1,96 corresponde a um nível de confiança de 95%.
The z-distribution is a fundamental concept in quantitative research across both Brazilian and American academic institutions. It is taught extensively in statistics, psychology, economics, and engineering programs. The term is used identically in Portuguese and English academic contexts, making it a true cognate in statistical terminology.
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