A 99 percent confidence interval is a term used in statistics to show the mean of the population. It is used to calculate observations within a particular group of the population. A confidence interval does not necessarily provide you with a true prediction, only an estimate. You will have to know the population mean in order to determine the confidence interval. Before you can get the confidence
. level, you will need to know the characteristics of the population. You will also have to gather sample data pertaining to the population you are studying. For example you can assume the weights of 70 year old women. Once you have all the sample data gathered you can present your data graphically using a pie chart or bar chart. You can also report a confidence interval ion a table. Whichever chart or diagram you use, you will need to indicate the mean observations. The data is usually represented in percentage. For example you can show on the chart, 80% of 70 year old women weigh 130 pounds.
