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.
Este exercício faz parte do curso
Statistical Thinking in Python (Part 1)
Instruções do exercício
- Compute the variance of the data in the
versicolor_petal_lengtharray usingnp.var()and store it in a variable calledvariance. - Print the square root of this value.
- Print the standard deviation of the data in the
versicolor_petal_lengtharray usingnp.std().
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
# Compute the variance: variance
# Print the square root of the variance
# Print the standard deviation