Height in cm
Weight in kg
We would like to estimate the weight of a man given that his height is 172 cm.
In the previous example of Fahrenheit and Celsius conversion, the data fitted the linear model perfectly. Thus, we could perform even a simple mathematical analysis (solving basic equations) to gain the conversion formula. Most data in the real world does not fit a model perfectly. For such an analysis, it would be good to find a model that fits the given data with minimal errors. We can use the least squares method to find such a linear model.
We put the data from the preceding table into the vectors and try to fit the linear model:
# source_code/6/weight_prediction.py import numpy as np from scipy.linalg import lstsq height = np.array([180,174,184,168,178]) weight = np...