Excel number crunching trick

1. How to reverse engineer
cumulative data
@azolnai
cottenham.info

2. coronavirus.data.gov.uk daily case data

3. Sum weekly for England

4. But calculated cums. don’t match NHSx’s

5. Issue
• Data match until 19 Apr.
• Then NHSx takes over dashboard from PHE
• New tabulations create wobble in data

6. See the difference between cums.

7. Add to each weekly the increment in cum.
differences

8. New weekly value matches cums. with NHSx’s

9. Data same til 19/04 then decrements but at
different rate

10. Follow the context for this in blog.zolnai.ca