Answer: Gauss (1April 30, 777-1February 23, 855), a famous German mathematician, physicist, astronomer, geometer and geodesist, whose representative works include arithmetic research and celestial motion theory, made important contributions: Gauss discovered the prime number distribution theorem and the least square method. After processing enough measurement data, new probability measurement results can be obtained. On this basis, Gaussian then focuses on the calculation of surfaces and curves, and successfully obtains Gaussian bell curve (normal distribution curve). Its function is named standard normal distribution (or Gaussian distribution), which is widely used in probability calculation.