Statistical Questions and Types of Data

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What is a statistical question?

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A statistical question is one that anticipates variability in the data and can be answered by collecting data. For example, 'What is the average height of students in my class?'

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What is a categorical data set?

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Categorical data sets consist of categories or groups. For example, 'Types of pets owned by students' (dog, cat, fish).

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What is a numerical data set?

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Numerical data sets consist of numbers and can be measured. For example, 'Number of books read by each student.'

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How do you identify a statistical question?

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A statistical question can be identified by checking if it requires data collection and if the answer involves variability. For example, 'How many hours do students study each week?' is statistical.

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What is the difference between categorical and numerical data?

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Categorical data describes characteristics or qualities, while numerical data represents quantities or measurements.

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Is 'How many pets do students have?' a statistical question?

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Yes, it is a statistical question because it involves collecting data from multiple students.

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Is 'What is the color of my backpack?' a statistical question?

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No, it is not a statistical question because it pertains to a single individual's backpack.

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What type of data is 'the number of students in each grade'?

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Numerical data, as it represents a count of students.

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What type of data is 'favorite ice cream flavors of students'?

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Categorical data, as it consists of different categories of flavors.

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Can a question be both statistical and non-statistical?

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No, a question is either statistical (involves variability and data collection) or non-statistical (specific to one individual or instance).