优化一下代码，在以下代码所画的散点图中，将x1作为水平坐标轴，x2作为竖直坐标轴，画出散点图。代码如下：import turtle import random def corr_coef(x, y): n = len(x) mean_x = sum(x) / n mean_y = sum(y) / n term1 = sum((x[i] - mean_x) * (y[i] - mean_y) for i in range(n)) term2 = sum((x[i] - mean_x)**2 for i in range(n)) * sum((y[i] - mean_y)**2 for i in range(n)) return term1 / (term2**0.5) n = random.randint(101, 500) # 生成列表的随机长度 x1 = [random.uniform(0,1) for i in range(n)] x2 = [random.uniform(0,1) for i in range(n)] r = corr_coef(x1, x2) t = turtle.Turtle() t.color('blue') t.shape('circle') # 设置画布大小和坐标范围 turtle.setup(600, 600) turtle.tracer(False) t.speed(10) min_val = min(min(x1), min(x2)) # 计算最小值和最大值以适应绘图区域 max_val = max(max(x1), max(x2)) turtle.screensize(0, 0) # 重置屏幕大小 turtle.setworldcoordinates(min_val-0.1, min_val-0.1, max_val+0.1, max_val+0.1) t.penup() t.goto(x1[0], x2[0]) t.pendown() for i in range(1,n): t.goto(x1[i],x2[i]) t.stamp() # x1和x2为坐标轴的散点图 t.penup() t.goto(min_val-0.05,min_val-0.05) t.pendown() t.goto(max_val+0.05,max_val+0.05) t.penup() t.goto(min_val - 0.05, max_val + 0.05) t.pendown() t.goto(max_val + 0.05, min_val - 0.05) # 绘制相关系数 turtle.penup() turtle.setworldcoordinates(min_val-0.1, min_val-0.1, max_val+0.1, max_val+4) # 设置绘图区域 turtle.goto(sum([min_val, max_val])/2, max_val+2) turtle.setworldcoordinates(min_val-0.1, min_val-0.1, max_val+0.1, max_val+0.1) # 设置坐标轴位置 turtle.mainloop()

优化代码如下：

import turtle
import random

def corr_coef(x, y):
n = len(x)
mean_x = sum(x) / n
mean_y = sum(y) / n
term1 = sum((x[i] - mean_x) * (y[i] - mean_y) for i in range(n))
term2 = sum((x[i] - mean_x)**2 for i in range(n)) * sum((y[i] - mean_y)**2 for i in range(n))
return term1 / (term2**0.5)

n = random.randint(101, 500)
x1 = [random.randint(0, 100) for i in range(n)]
x2 = [random.randint(0, 100) for i in range(n)]

# 将x1作为水平坐标轴，x2作为竖直坐标轴画出散点图
turtle.speed(0)
turtle.penup()
turtle.setposition(-300, -300)
turtle.pendown()
turtle.hideturtle()
for i in range(n):
turtle.dot(10, random.random(), random.random(), random.random())
turtle.penup()
turtle.goto(x1[i], x2[i])
turtle.pendown()

turtle.done()