Very high or very low value not typical of the other values in the data set.

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Prepare for your Leaving Certificate Mathematics exam with a comprehensive practice test featuring key definitions. Use flashcards, multiple choice questions, and detailed explanations to ensure success and mastery of fundamental math concepts.

Multiple Choice

Very high or very low value not typical of the other values in the data set.

Explanation:
An outlier is a single observation that lies far from the rest of the data. When one value is much higher or much lower than the others, it doesn’t fit the overall pattern of the dataset. That’s exactly what the phrase describes—an unusual point in the data. Observations are the individual data points, the dataset is the whole collection, and descriptive statistics are the summaries of those numbers. None of those terms name a single atypical value like this, whereas outlier does.

An outlier is a single observation that lies far from the rest of the data. When one value is much higher or much lower than the others, it doesn’t fit the overall pattern of the dataset. That’s exactly what the phrase describes—an unusual point in the data. Observations are the individual data points, the dataset is the whole collection, and descriptive statistics are the summaries of those numbers. None of those terms name a single atypical value like this, whereas outlier does.

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