The senior partner slides three pages across the table. Bar charts, line graphs, a data table with 50 rows.

'You have two minutes. Tell me what you see.'

You stare at the first chart. Lots of bars. Some go up, some go down. Your brain tries to read every number. 30 seconds pass. You're still on the first chart.

'Time.'

You managed to say 'revenue increased' before running out of time. The partner expected three insights, two hypotheses, and a recommendation. You gave them one obvious fact.

This is the reality of case interviews. Interviewers don't give you charts to be nice. They're testing whether you can spot patterns fast, separate signal from noise, and turn data into business insights under pressure.

Most candidates fail this part not because they're bad at math, but because they read charts like students, not consultants. They try to absorb everything instead of hunting for the story.

This lesson teaches you to read charts the way McKinsey analysts do: fast, focused, and always asking 'so what?'