The more significant figures you give, the closer you get to the actual value. When rounding to a given number of significant figures, it's important to know what place value you're rounding to ...

For example, to round the number 1,121,565 to the nearest million, look at the digit in the hundred thousands column. To round a number to the nearest 10, look at the ones digit. If the ones digit ...

But first, a quick disclaimer. As I talk, I do a lot of rounding of numbers, but the data you see on screen will be more exact. Things might have changed since I recorded this in mid-June.

You make up your own mind. In this episode of Just the Facts, "America by the Numbers." But first, a quick disclaimer. As I talk, I do a lot of rounding of numbers, but the data you see on screen ...