Data Analysis 7.12A

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What is data analysis?

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Data analysis is the process of inspecting, cleaning, transforming, and modeling data to discover useful information, inform conclusions, and support decision-making.

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What is a dataset?

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A dataset is a collection of related data that is usually presented in a table format, where each row represents a record and each column represents a variable.

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What is the mean in data analysis?

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The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

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What is the median?

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The median is the middle value in a dataset when the numbers are arranged in ascending or descending order.

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What is the mode?

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The mode is the value that appears most frequently in a dataset.

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What is a bar graph?

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A bar graph is a visual representation of data using bars of different heights or lengths to compare different categories.

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What is a line graph?

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A line graph is a type of chart that displays information as a series of data points called 'markers' connected by straight line segments.

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What is a pie chart?

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A pie chart is a circular statistical graphic that is divided into slices to illustrate numerical proportions.

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What is a variable in data analysis?

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A variable is any characteristic, number, or quantity that can be measured or counted.

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What is a correlation?

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Correlation is a statistical measure that describes the extent to which two variables change together.