The point of my comment wasn't as much about the presentation (although admittedly a part of it), as the fact that what's being presented doesn't match what was in the spreadsheets and there are "corrections" to the data being made while it's being presented. It's an issue about their preparation. It diminishes their credibility.

If someone is going to present conclusive data, they shouldn't be modifying it as they go. Quite frankly, it comes across as though they're making it up on the spot.

The cumulative values from multiple batches should have been coming from simple summation formulas referencing the source values. It's a spreadsheet. That's literally one of the simplest use cases for them.

"oops, Batch A should have been 12" edits cell

"oops, should have had Batch 14 included in this total" edits cell

If they're confident in their analysis, then they need to have this shit sorted out before presenting it.

The point of my comment wasn't as much about the presentation (although admittedly a part of it), as the fact that what's being presented doesn't match what was in the spreadsheets and there are "corrections" to the data being made while it's being presented. It diminishes their credibility.

If someone is going to present conclusive data, they shouldn't be modifying it as they go. Quite frankly, it comes across as though they're making it up on the spot.

The cumulative values from multiple batches should have been coming from simple summation formulas referencing the source values. It's a spreadsheet. That's literally one of the simplest use cases for them.

"oops, Batch A should have been 12" edits cell

"oops, should have had Batch 14 included in this total" edits cell

If they're confident in their analysis, then they need to have this shit sorted out before presenting it.