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June 2, 2015 18:24
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Centrální limitní věta
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| import numpy as np | |
| import matplotlib.pyplot as plt | |
| cube1 = [x / 21 for x in range(1, 7)] | |
| cube2 = list(reversed(cube1)) | |
| def cube1_throw(number_throws=1000): | |
| return cube_throw(number_throws, cube1) | |
| def random_cube_throw(number_throws=1000): | |
| results = [] | |
| for i in range(number_throws): | |
| cn = np.random.choice(2) | |
| if cn == 0: | |
| cube = cube1 | |
| else: | |
| cube = cube2 | |
| choice = np.random.choice(6, 1, p=cube)[0] | |
| results.append(choice + 1) | |
| return results | |
| # plot_results(results) | |
| def one_random_cube_throw(number_throws=1000): | |
| cn = np.random.choice(2) | |
| if cn == 0: | |
| cube = cube1 | |
| else: | |
| cube = cube2 | |
| return cube_throw(number_throws, cube) | |
| def cube_throw(number_throws, cube) -> [int]: | |
| results = [] | |
| for i in range(number_throws): | |
| choice = np.random.choice(6, 1, p=cube)[0] | |
| results.append(choice + 1) | |
| return results | |
| def calculate_avgs(results, repeats) -> {}: | |
| plotyplot = {} | |
| for i in range(6): | |
| plotyplot[i + 1] = results.count(i + 1) / repeats | |
| return plotyplot | |
| def plot_results(results): | |
| plotyplot = {} | |
| for i in range(6): | |
| plotyplot[i + 1] = results.count(i + 1) | |
| print(plotyplot) | |
| plt.figure() | |
| ax = plt.subplot(111) | |
| ax.bar(plotyplot.keys(), plotyplot.values()) | |
| plt.show() | |
| def uk1(): | |
| repeats = 1000 | |
| results = [] | |
| for i in range(repeats): | |
| results.append(sum(random_cube_throw(100)) / 100) | |
| plt.clf() | |
| plt.hist(results, normed=True) | |
| # plt.show() | |
| plt.savefig("uk1.png") | |
| def uk2(): | |
| repeats = 1000 | |
| results = [] | |
| for i in range(repeats): | |
| results.append(sum(cube1_throw(100)) / 100) | |
| plt.clf() | |
| plt.hist(results, normed=True) | |
| # plt.show() | |
| plt.savefig("uk2.png") | |
| def uk3(): | |
| repeats = 1000 | |
| results = [] | |
| for i in range(repeats): | |
| results.append(sum(one_random_cube_throw(100)) / 100) | |
| plt.clf() | |
| plt.hist(results, normed=True) | |
| # plt.show() | |
| plt.savefig("uk3.png") | |
| uk1() | |
| uk2() | |
| uk3() |
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