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Showing posts with the label covariance

Statistically Thinking as a Data Scientist-1

Another post starts with you beautiful people! I hope you have enjoyed my previous post about  CRUD operations in relational database. As we have seen in one of my previous post about  EDA  that; first we explore data by plotting them and then we compute simple summary statistics; is a crucial first step in statistical analysis of data. For the exercises in this section, we will use a classic data set-iris; collected by botanist Edward Anderson and made famous by Ronald Fisher, one of the most prolific statisticians in history-  what is IRIS dataset? Anderson carefully measured the anatomical properties of samples of three different species of iris, Iris setosa, Iris versicolor, and Iris virginica . We will learn following topics with our dataset- Computing the ECDF Plotting the ECDF Comparison of ECDFs Computing means Computing percentiles Comparing percentile to ECDF Computing the variance Standard deviation Computing the covariance The s...