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Random Variable Denotation
Random variables are typically denoted using a plain typeface lowercase letter and the values it can take on with lowercase script letters.
- The random variable a can have the values of a1 and a2
For vector-valued variables:
- The random variable x can have one of its value as 𝑥
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Data Science
Foundations of Large Language Models Course
Computing Sciences
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Predicted Value (ŷ)
A data scientist is describing a dataset of house features. They write the following statement: 'Let x be a random variable representing the features of a house (e.g., square footage, number of bedrooms), and let x be a specific set of features for one particular house in the dataset.' Based on this statement and standard notational conventions, what does x represent?
Identifying Notational Errors
A researcher is modeling student heights. They write: 'Let h represent the random variable for a student's height, and let h be a specific observed height, such as 165 cm.' This statement correctly follows standard notational conventions for random variables.