Correlation coefficient: Calculate using python
import numpy
from sklearn.metrics import r2_score
a = [10, 18, 45, 32, 50]
b = [2, 4, 6, 8, 10]
model = numpy.poly1d(numpy.polyfit(a, b, 3))
print(r2_score(b, model(a)))
import numpy
from sklearn.metrics import r2_score
a = [10, 18, 45, 32, 50]
b = [2, 4, 6, 8, 10]
model = numpy.poly1d(numpy.polyfit(a, b, 3))
print(r2_score(b, model(a)))