Every three months, the central bank updates a scatter chart showing where top officials believe rates are headed. Not everyone is a fan of the anonymous projections.

If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...

Graphs are a useful way to show numerical data. There are a variety of graphs that can help highlight patterns and be used to reach conclusions. Choosing the right graph is very important. Bar charts ...