What are some of the most common statistical questions asked in interviews with marketing/management/finance firms?
Here are some examples:
- “How many airplanes leave from Boston’s Logan Airport on Monday?”
- “How many lightbulbs are there in Manhattan?”
- “What is the market size for a cancer diagnostic technology in the U.S.?”
- “How many passengers fly through LAX in a calendar year?”
- How many watermelons were sold in the USA last year
- How many bricks are there in Big Ben
- How many traffic lights are there in New York
A working example:
Estimate how much time it would take a single average size dump truck…to move an average size mountain from one location to another one located 1 mile away.
How I would work it out: (all guesses)
- The average size dump truck can hold 2 tonnes
- The average size mountain is 1 million tonnes
- That means it needs 500,000 dump truck journeys to transport it
- If it can travel approximately 60 miles per hour that’s 1 minute per mile
- Loading time is 1 hour
- Drop off time is 30 minutes
- Get in/Get out/Speed Up - Slow Down time is 2 minutes
- Return journey another 1 minute
1 return trip is 1 hour 34 minutes
Which is 94 x 500k (Round it up maths w/no calculator)
= 4.7 million minutes.
If we assume the driver needs breaks/shift changes etc etc. It’s around 2 hours 'slippage every 1000 tonnes.
That’s an additional 1000 hours or 60k minutes.
So the true total is then 4.76 million minutes
[NB I didn’t check this against anything online - it’s just an example of how I would answer this - I could be very wrong - it’s just important to have a rationale]
transcribed from most common statistical questions asked in marketing interviews