gallaplacidia - Tumblr blog

[gallaplacidia]

Young Women Novelists turned 1 today!

[gallaplacidia]

Make it so!

Least Squares

Minimize $$\sum_1^n (y_i-\alpha-\beta x_i)^2$$

The solution to this optimization problem finds the slope and intercept for a straight line passing close to the \( n \) data points \( (x_i,y_i) \). This is the well known least squares regression line.

[gallaplacidia]

Sometimes stuff happens

The Poisson distribution

$$\text{Prob}(X=r)=e^{-\lambda}\frac{\lambda^r}{r!}$$

The Poisson distribution gives the probability of randomly occurring events … like the number of car accidents in a week.

[gallaplacidia]

Another way to look at -1

The Euler identity

$$e^{\pi i}=-1$$

Strange, but true.

[gallaplacidia]

Everyone's first program

Hello World!