## Who created estimation 180?

Andrew Stadel

Estimation 180 is an activity curated by Andrew Stadel, a teacher and Mathematics Coach in California. He created 180 different estimation challenges for his students and published his site, Estimation 180 in 2012.

**How tall is Mr Stadel wife?**

Stadel is 6″4′ (1.93 m) tall to analyze Mrs. Stadel’s height and make an estimation. The kids did a great job! We also connected this back to whether our estimations were reasonable (what is too HIGH, what is too LOW).

### What is Mr Stadels height?

Most estimated he was 2 meters or 200 centimeters because he looked taller than me and meters were what they were most familiar with. Mr. Stadel ended up being 193 centimeters.

**How tall is Mr Stadels lamppost?**

Stadel’s height. Their reasoning for their actual estimates was solid – they said the lamppost seemed like it was 2.5 to 3 times his height so their estimates were in the 15′ to 19′ range.

#### How tall should a lamp post be?

The typical height of a street lamp post is a range of 2.4m to 15m (8 to 50 feet). The street lighting pole taller than 10m is consider as a high mast. The street lights with an approximate height of 5-6m are common on a residential estate road, whereas 8-12m lamppost is popular on main traffic routes.

**What is the general rule of estimate?**

THE GENERAL RULE FOR ESTIMATING IS TO LOOK AT THE DIGIT TO THE RIGHT OF THE DIGIT YOU WANT TO ESTIMATE. ESTIMATING OR ROUNDING TO THE NEAREST WHOLE NUMBER MEANS LOOKING AT THE DIGIT TO THE RIGHT OF THE DECIMAL. IF YOU SEE A DIGIT GREATER THAN 5, ROUND UP, AND IF IT’S LESS THAN 5, ROUND DOWN.

## What is a best estimate?

Best estimate means the value derived by an evaluator using deterministic methods that best represents the expected outcome with no optimism or conservatism.

**How do you solve estimation questions?**

- Memorize Basic Facts. Before you even go to the interview, take time to memorize a few basic numbers.
- Scope the Problem. Ask questions to clarify the scope of the problem in question.
- Break Down The Problem.
- Estimate!
- The Final Answer.
- Now, Tell Your Interviewer Why You’re Wrong.