<aside> 💡 continuous vs discrete

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<aside> 💡 Distribution : What is the probability the specific outcome will occur?

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probabilty density function (pdf)

variance: spread of the data

Central Limit Theorem

Whatever distribution the population has, the Sampling Distribution of the sample mean will be distributed normally.

book : population, page : sample (getting average word length in every page)

Z = (X - μ) / (σ / sqrt(n))

Where:

• Z is the z-score.
• X is the sample mean.
• μ is the population mean.
• σ is the population standard deviation.
• n is the sample size.