# Calculate the Average Difference or Average of Differences

If the confidence interval does not contain zero, it is concluded that the two processes are operating at different averages. If the confidence interval does contain zero, you conclude that there is no evidence that the two processes are operating at different averages. They appear to have the same average.

## logging - Why has my Google Ping different Averages? - Super User ### Here's the difference between averages and medians - Yahoo News

So while Spain may have a different average appearance than Italy it is pretty clear genetically and phenotypcially that their is heavy overlap between Italians and Spaniards. So can not draw a clear line and say “here is a Spaniard and here is a Italian” like you can between a Lion, House cat, and a Tiger.

### Here's the difference between averages and medians

This is a great activity for recaping finding averages from frequency tables, or as a starting point for the topic. You can choose from grouped or non-grouped data, as well as making use of different averages. The mean, median and mode are each calculated using different methods and when applied to the same set of original data they often result in different average values. It is important to understand what each of these mathematical measures of average tells you about the original data and consider which measure, the mean, median or mode, is the most appropriate to calculate should you wish to use an average value to describe a dataset.Moving averages technical analysis determines the security’s momentum over a period of time and often incorporates the comparison of two different averages. For instance, during an analysis, the short-term average is compared with the long-term average.

### For different effects, you'll want different averages created

This newsletter showed how to compare multiple processes. Samples are taken from each process. The average and standard deviation of each process is calculated. A "s" control chart is used to determine if the variance is the same for each process. If so, the Bonferroni method cannot be used. If the variances are the same, each pair of averages are compared. The t distribution is used to develop a confidence interval around the difference in each pair of averages. If the interval contains zero, we conclude that those two processes represented by the pair of averages do not have significantly different averages. If the interval does not include zero, we conclude that those two processes have different averages.

### the basis for different averages

A crossover of a single moving average is one technique for trading moving averages. Another technique is crossovers of different averages to signal potential early stages of a new trend.

### What about the different averages

The method described below (called Bonferroni's method) is one method of examining multiple processes. Bonferroni's method develops multiple confidence intervals for the differences in averages. Every possible combination of pair of processes is examined. If the confidence interval contains zero, there is no difference in the averages of the two processes. If the interval does not contain zero, there is evidence that the two processes are operating at different averages. Differences in variances are checked through the use of a standard deviation (s) control chart.