Plotting the frequency of data falling within numeric ranges illustrates the diversity of your data. As an example, a teacher might wish to calculate and display her students' grades by tabulating the ...

Tallying is a way of recording data that counts in groups of five. The data is tallied as it is counted, with a mark for each piece of data, and then the frequency is recorded at the end. Frequency ...

The forward price/earnings (PE) ratio — the price of the S&P 500 divided by the expected earnings of those S&P 500 companies — is probably the most popular way to measure value in the stock market.