The 7-Day Averages that appear on the Stats page are a calculation (or average) of the previous seven days worth of data. For the most accurate reading, revisit these averages after you've entered a week's worth of data.
You can access the "Stats" page by tapping the "More" button in the bottom right corner of the dashboard > then clicking the "Stats" button.
Please note that you can tap into any chart to see individual entries, even if there isn't enough data to calculate the 7-Day Averages.