# np_baseball is available
# Import numpy
import numpy as np
# Print mean height (first column)
avg = np.mean(np_baseball[:,0])
print("Average: " + str(avg))
# Print median height. Replace 'None'
med = None
print("Median: " + str(med))
# Print out the standard deviation on height. Replace 'None'
stddev = None
print("Standard Deviation: " + str(stddev))
# Print out correlation between first and second column. Replace 'None'
corr = None
print("Correlation: " + str(corr))