Data Analysis

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What is Data Analysis?

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Data Analysis is the process of inspecting, cleaning, 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 does it mean to 'clean' data?

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Cleaning data involves correcting or removing inaccurate, incomplete, or irrelevant data from a dataset to improve its quality.

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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 numbers together and dividing by the count of numbers.

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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. If there is an even number of values, the median is the average of the two middle numbers.

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What is a mode?

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

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What is a graph?

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A graph is a visual representation of data that helps to illustrate relationships between different variables.

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What is a bar chart?

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A bar chart is a type of graph that uses bars to show the frequency or value of different categories.

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What is a line graph?

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A line graph is a type of graph that uses lines to connect data points, showing trends over time.

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What is a pie chart?

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A pie chart is a circular graph divided into slices to illustrate numerical proportions.