Data Analysis

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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 points or values, often organized in a table with rows and columns.

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What is the purpose of data visualization?

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Data visualization is used to represent data graphically, making it easier to identify patterns, trends, and insights.

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What is a 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 a median?

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

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What is a 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 to compare quantities.

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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 divided into slices to illustrate numerical proportions.

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What is a range in data analysis?

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The range is the difference between the highest and lowest values in a dataset.