[Solved] Why does this code raise an error?import numpy as np from numpy import polyfit x = np.array([1, 2, 3]) y = np.array([2, 4]) coeffs = polyfit(x, y, 1) | SciPy

SciPy - Curve Fitting and Regression

Why does this code raise an error?

import numpy as np
from numpy import polyfit
x = np.array([1, 2, 3])
y = np.array([2, 4])
coeffs = polyfit(x, y, 1)

Ax and y arrays have different lengths

BDegree 1 is invalid for polyfit

Cnumpy arrays cannot be used with polyfit

DMissing import for matplotlib

Step-by-Step Solution

Solution:

Step 1: Check array lengths
x has 3 elements, y has 2 elements; lengths must match for fitting.
Step 2: Validate other conditions
Degree 1 is valid; numpy arrays are supported; matplotlib import is unrelated.
Final Answer:
x and y arrays have different lengths -> Option A
Quick Check:
Matching array lengths required [OK]

Quick Trick: x and y must have same length [OK]

Common Mistakes:

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