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Let’s say you work for a social media company that has just done a launch in a new city. Looking at weekly metrics, you see a slow decrease in the average number of comments per user from January to March in this city.

The company has been consistently growing new users in the city from January to March.

What are some reasons why the average number of comments per user would be decreasing and what metrics would you look into?

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

What metric could be used to measure if active users are still engaging on the platform despite an overall decrease in the average number of comments per user?

Decreasing Comments

How would you investigate a decline in the average number of comments per user?

You are asked to develop a simple tag counter that will look for the occurrence of certain words or phrases in a piece of text.

You are given a paragraph as a string and a list of tag groups as a list of lists of strings. Write a <code>tag_counter</code> function that returns a list of integers with the number of times each tag in the tag group was used in the text.

Note: Your function should be case-insensitive with regards to the tag groups.

Example:

Input:

<pre tabindex="0" class="chroma"><code>tag_groups = [
 [&#39;data scientist&#39;, &#39;data analyst&#39;], 
 [&#39;data engineer&#39;, &#39;data wrangler&#39;], 
 [&#39;machine learning engineer&#39;], 
 [&#39;data&#39; , &#39;engineer&#39;]]
text = &#34;Today, with the advent of data science, different roles have emerged in the industry. Job postings are abundant of many names such as data scientist, data engineer, data wrangler, deep learning specialist, and machine learning specialist to name a few.&#34;
</code></pre>

Output:

<pre tabindex="0" class="chroma"><code>def tag_counter(tag_groups,text) -&gt; [1, 2, 0, 5]
</code></pre>

Write a function that returns a list of integers with the number of times each tag in the tag group was used in the text

Tag Counter

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?

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