Código utilizado

import numpy as np

Dir=""

arc="tiempo.xls"

import pandas as pd

xls_file=pd.ExcelFile(Dir + arc)

df=xls_file.parse("Sheet1")

data=np.array(df)

print(data)

import matplotlib.pyplot as plt

plt.ion

plt.figure()

plt.hist(data)

plt.show()

print (np.mean(data))

print (np.std(data))

print('media: ',np.mean(data))

DeltaTm=0.01

sigmaT=(np.std(data))/np.sqrt (50)

DeltaT=np.sqrt (DeltaTm**2 + sigmaT**2)

print (DeltaT)