Week 11- Distribution of Data-Histogram

sns.kdeplot(d.x,shade=True)

sns.kdeplot(d.y,shade=True)

sns.kdeplot(d.z,shade=True)

what does x, y & z mean

d is a data frame and x, y and z are columns(features) of dataframe d.
Check the hands-on video again (or check the beginning of the week’s downloadable notebook). Its explains what is d, x, y and z. It would be more helpful.