Assuming that you have float mean speed data in MeanSpeed column (0.12, 2.25, 2.77, etc) and you are using dataframe, you can :. ... <看更多>

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This example shows a basic bar chart created with Altair. ... <看更多>

On python it is calculated with below code : import scipy.stats as st st.t.ppf(confidence_level / 2 , len(sample)-1). ... <看更多>