The standard deviation and the variance

As mentioned in the video, the standard deviation is the square root of the variance. You will see this for yourself by computing the standard deviation using np.std() and comparing it to what you get by computing the variance with np.var() and then computing the square root.

Toto cvičení je součástí kurzu

Statistical Thinking in Python (Part 1)

Zobrazit kurz

Pokyny k cvičení

Compute the variance of the data in the versicolor_petal_length array using np.var() and store it in a variable called variance.
Print the square root of this value.
Print the standard deviation of the data in the versicolor_petal_length array using np.std().

Interaktivní cvičení na vyzkoušení si v praxi

Vyzkoušejte si toto cvičení dokončením tohoto ukázkového kódu.

# Compute the variance: variance


# Print the square root of the variance


# Print the standard deviation

Upravit a spustit kód