5.93 feet. This is our sample mean, or if we wanna make it clear, sample arithmetic mean. And when we're taking this calculation based on a sample, and then somehow we're trying to estimate it for the entire population, we call this right over here, we call it a statistic. We call it a statistic. Now, you might be saying, well, what notation do we use if somehow we are able to measure it for the population? Well, let's say we can't even measure it for the population, but we at least wanna denote what the population mean is. Well, if you wanna do that, the population mean is usually denoted by the Greek letter mu.