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Calico Life Sciences Interview Questions

Python

Machine Learning

Product Metrics

A/B Testing

Analytics

Statistics

Probability

Algorithms

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Given a sorted list of integers <code>ints</code> with no duplicates, write an efficient function <code>nearest_entries</code> that takes in integers <code>N</code> and <code>k</code> and does the following:

Finds the element of the list that is closest to <code>N</code> and returns that element along with the <code>k</code>-next and <code>k</code>-previous elements of the list.

Notes: 
1. If <code>k</code> is large enough to go out of the bounds of <code>ints</code>, return all entries up to that bound but do not throw an error.
2. If <code>N</code> is not an entry in <code>ints</code> and there are two values equally close to <code>N</code>, use the lower value as your starting point.

Examples:

Input:

<pre tabindex="0" class="chroma"><code>#Example 1:
ints = [1,2,3,4,5,6,7,8,9]
N = 4
k = 2
def nearest_entries(ints, N, k) -&gt; [2,3,4,5,6]

#Example 2:
ints = [1,3,4,6,8]
N = 5
k = 1
def nearest_entries(ints, N, k) -&gt; [3,4,6]

#Example 3:
ints = [1,3,4,7,9,11,15,22,77]
N = 22
k = 4
def nearest_entries(ints, N,k) -&gt; [7, 9, 11, 15, 22, 77]
</code></pre>

Finds the element of a list that is closest to some integer, along with the k-next and k-previous elements

K Nearest Entries

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

What is a key disadvantage of the F-test when compared to multiple t-tests?

What is a key disadvantage of the F-test when compared to multiple t-tests?

Hundreds of Hypotheses

You are testing hundreds of hypotheses with many t-tests. What considerations should be made?

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?

Calico Life Sciences Interview Questions

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Calico Life Sciences Interview Questions

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