PBC applied to quiz data

Pbc example with scipy

import pandas as pd
from scipy.stats import pointbiserialr

# get data
data = pd.read_csv('D:\quiz-Alg2U0Quiz-standard20180510.csv')

# get continuous and dichotomous data
grades = data['Percent Correct']
question_1 = data['Q1']

# pbc of first question
pbc = pointbiserialr(question_1, grades)
print(pbc)