upload day27 homework

Author: alvinhuu

D27_Discrete/homework.py

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+# library
+import matplotlib.pyplot as plt
+import numpy as np
+import pandas as pd
+from scipy import stats
+import math
+import statistics
+
+'''
+# 離散均勻分配 (Discrete Uniform Distribution)
+# 前提：其中有限個數值擁有相同的機率。
+'''
+# 1.定義離散均勻分配的基本資訊
+
+low=1 
+high=7
+r = np.arange(low,high)
+# 2.計算離散均勻分配的概率質量分佈 (probability mass function)
+# 之所以稱為質量，是因為離散的點
+# 產生 x 軸的點
+#r = np.arange(stats.randint.ppf(0.01, low, high),
+#              stats.randint.ppf(0.99, low, high),1)
+print(r)
+# P(X=x) --> 是機率
+probs = stats.randint.pmf(r,low,high)
+print(probs)
+plt.bar(r, probs)
+plt.ylabel('P(X=x)')
+plt.xlabel('x')
+plt.title('pmf of DU(1,6)')
+plt.show()