My understanding of this is the max, min, and average values are the values for the entire host over the time period show in the display, in this case over the last hour.

If you highlight the value that shows the percentages for the entire host, (I think its purple in your screen shot) you should see that the values in the chart equal the values in text in the table below the chart.

So when it says real time display, it is not moment to moment real time, but a chart of a sample taken every 20 seconds and then displayed on the chart in 20 second increments over the last hour.

In other words every 20 seconds it samples the host and then displays that value to the far right (end of the chart). The latest value is just that, the latest sample measured.

The max, min, and average value are those respective measurements over the last hour for the chart you posted. You are absolutely correct in thinking that the last sample cannot have different values for all those different measurements at the same time. The only time they would be the same is on the inital sample.

Another interesting thing to notice is you can see how well the scheduler is utilizing and spreading the load over the various cpu's by looking at this chart. When you look at each of the varios indivdual cpu's, you can see that each of the 4 cpu's have very similar max, min, and average values over the last hour, with a slight exception of a higher average for cpu0. This is to be expected since this is the cpu where the service console runs on, and so there will be a somewhat higher load on this cpu, generally speaking,

12 vm's on 4 cpus averaging about 30% cpu utilization. Not bad, 3 vms per core. Are they all single processor vms?