params=stats.norm.fit(data)mu_fit,sigma_fit=params x=np.linspace(-5,5,100)y=stats.norm.pdf(x,loc=mu_fit,scale=sigma_fit)plt.plot(x,y)plt.hist(data,bins=30,density=True,alpha=0.5)plt.xlabel('Value')plt.ylabel('Frequency')plt.title('Normal Distribution Fit')plt.show() 1. 2. 3...
distfit 简单又好用# 安装 pip install distfitdistfit 常见的用法:.fit_transform(): 在经验数据 X...
1,1000)# 数据可视化plt.hist(data,bins=30,density=True,alpha=0.5,color='g')mu,std=stats.norm.fit(data)xmin,xmax=plt.xlim()x=np.linspace(xmin,xmax,100)p=stats.norm.pdf(x,mu,std)plt.plot(x,p,'k',linewidth=2)plt.title('Data Histogram and Normal Curve')plt.show()#...
cv=3).fit(X, y)y_pred_lasso = cross_val_predict(lassocv, X, y, cv=3)#print(y_pred_l...
loc 平均值 scale (scale) 标准差 pdf(x, loc=0, scale=1) 正态分布(Normal distribution),也称“常态分布”,又名高斯分布(Gaussian...若随机变量X服从一个数学期望为μ、方差为σ^2的正态分布,记为N(μ,σ^2)。其概率密度函数为正态分布的期望值μ...
% normal distribution, with mean 0 and variance 1. % Then the incomplete gamma function, 'gammainc', % is used to map these points radially to fit in the % hypersphere of finite radius r with a uniform % spatial distribution. % Roger Stafford - 12/23/05 ...
age.plot(kind ='kde')### 原始数据的正态分布M_S=stats.norm.fit(age)###正态分布拟合的平均值loc,标准差 scalenormalDistribution = stats.norm(M_S[0], M_S[1])### 绘制拟合的正态分布图x = np.linspace(normalDistribution.ppf(0.01), normalDistribution.ppf(0.99), 100) plt.plot(x, ...
mu, std = norm.fit(data)x = np.linspace(data.min(), data.max(), 100) y = norm.pdf(x, mu, std)plt.hist(data, bins=30, density=True, alpha=0.5, color='steelblue', edgecolor='black')plt.plot(x, y, 'r-', linewidth=2)...
pip install numpy 在Python代码中导入NumPy库:importnumpyasnp 接下来,我们可以使用NumPy的random模块中的lognormal函数来生成一组对数正态分布的随机数。该函数有三个参数:均值(mean)、标准差(sigma)和数量(size)。data=np.random.lognormal(mean=1, sigma=0.5, size=1000)在上述代码中,我们生成了1000...
defkstest(rvs, cdf, args=(), N=20, alternative='two-sided', mode='approx'):"""Perform the Kolmogorov-Smirnov test for goodness of fit. This performs a test of the distribution G(x) of an observed random variable against a given distribution F(x). Under the null ...