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A/B Testing

Algorithms

Analytics

Machine Learning

Probability

Product Metrics

Python

Statistics

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Let’s say there is man who is 5.8 feet tall who doesn’t know how to swim. Let’s say he wants to swim in a lake with an average depth of 5.6 feet with a standard deviation of 1 foot.

What’s the probability of his survival assuming that when the the lake depth exceeds his height, he dies?

Swimmer Survival

We’re given a list of at least three numbers named <code>sides</code>. Each entry in <code>sides</code> represents the length of a side of a triangle.

Write a function <code>possible_triangles</code> to determine the number of possible triangles that can be formed using the given side lengths.

In the case that more than three side lengths are given, there may be several possible triangles.

Note: If there are multiple equal side lengths in the list, we consider them as distinct sides.

Examples:

Input:

<pre tabindex="0" class="chroma"><code>#Example 1:
sides = [3, 3, 3]
def possible_triangles(sides) -&gt; 1

#Example 2:
sides = [3, 3, 3, 3]
def possible_triangles(sides) -&gt; 4

#Example 3:
sides = [1, 2, 3.5]
def possible_triangles(sides) -&gt; 0
</code></pre>

Find the number of possible triangles from a list of side lengths.

Possible Triangles

Data Structures & Algorithms

Suppose there exists a new airline named Jetco that flies domestically across North America. Jetco recently had a study commissioned that tested the boarding time of every airline, and it came out that Jetco had the fastest average boarding times of any airline.

What factors could have biased this result, and what would you look into?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

What could potentially bias the average boarding time in favor of an airline that only flies domestically?

Boarding Times Bias

A new airline came out as the fastest average boarding times compared to other airlines.  What factors could have biased this result and what would you look into?

Question	Topic	Difficulty	Ask Chance
Swimmer Survival	Probability	Hard	Very High
Possible Triangles	Data Structures & Algorithms	Hard	Medium
Boarding Times Bias	Statistics	Medium	Medium

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