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data analysis for business

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What is data analysis?

Data analysis is a process of inspecting, cleansing, transforming and modelling data with the goal of discovering useful information, informing conclusion and supporting decision-making.

Formula of Correlation

ρxy = Correlation between two variables Cov(rx, ry) = Covariance of return X and Covariance of return of Y σx = Standard deviation of X σy = Standard deviation of Y

what is Mean?

To find the mean, add all the numbers together then divide by the number of numbers.

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Case Data analysis for business

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In this case I am talking about the correlation, regression and many other analysis methods.

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