I have an issue with the data given on this website, and I would appreciate any comment as to whether or not I have this wrong... i.e. am I missing something here?
https://www.coronatracker.com/country/united-states/
This data changes daily, but at the time of posting
18,503,154 Confirmed cases (+29,438 new cases)
10,808,834 Recovered
327,313 Deaths
1.8% Fatality Rate (of total cases)
58.4% Recovery Rate (of total cases)
... in particular, its the significance of the last two figures I am questioning. Even though it clearly states
"of total cases" people who don't understand the maths here, or look only at the percentages, could still come away with the wrong impression.
For mine, those rates should be calculated by looking at the total number of people who have had the disease, and either recovered or died, i.e. the total number of concluded cases (recovered + deaths) with the death rate being the latter as a percentage of the concluded cases, and the recovery rate being the former as a percentage of them.
The total number of concluded cases is 11,156,147 (10,808,834 + 327,313)
Of these
327,313 have died, so the death rate is really 327,313/11,156,147 * 100 = 2.93%
10,808,834 have recovered so the recovery rate is really 10,808,834/11,156,147 * 100 = 97.07%
If this is correct, then to me it looks like the number of deaths is heading for a huge total. The number of unconcluded cases is 7347007 (18,503,154 - 11,156,147) and statistically, 2.93% of those will die - that's 215,267.
If we imagined no new cases from today onwards then the total death toll would be over 552,000, but in reality the new cases each day adds even more.