Community Data Science Course (Spring 2023)/Week 3 coding challenges

Baby Names

Baby Names: How many babies were born last year with your name? Are a wider variety of names used for boys or for girls? What are the most popular names used for both boys and girls? This set of coding challenges will use data from the US Social Security Administration on baby names from the last several years to answer these questions and more!

Goals

• Have fun exploring real data on baby names in the US
• Practice manipulating and searching strings
• Practice using dictionaries
• Practice using numbers and doing simple arithmetic

#0 Setup

• Download the following file that contains the project for the week: https://github.com/CommunityDataScienceCollective/babynames-cdsw/archive/refs/heads/master.zip
• Once you have downloaded the file, extract the contents of the file into a folder on your desktop.
• Open the file BabyNames.ipynb as a Jupyter notebook and run the first cell to make sure that it works.

You'll be playing with data from the list of all baby names in the US (used more than five times in a year) from the last several years:

1. Right click the following file, click "Save Target as..." or "Save link as...", and save it to your Desktop directory: http://jtmorgan.net/ds4ux/week3/babynames.zip
2. The ".zip" extension on the above file indicates that it is a compressed Zip archive. We need to "extract" its contents. To do this, click on "Start", then "Computer", and navigate to your Desktop directory. Find babynames.zip on your Desktop and double-click on it to "unzip" it. That will create a folder called babynames containing several files.

Each of these files begins with this line:

import ssadata

This imports the ssadata module which is a special Python module we created for this project that includes only two things:

• boys - A dictionary where the the keys are names of boys and the values are the number of infants born in 2021 who had that particular name.
• girls - A dictionary where the the keys are names of boys and the values are the number of infants born in 2021 who had that particular name.

#1 Your own your name!

1. Search for your own name. Are there both boys and girls that have your name? Is your name more popular for one group than

for the other? (Hint: don't use a for loop for this one.)

#2 A sense of what's common

1. What is the most common name for each gender in 2021?
2. What is the least common name?
3. How often do the least common names occur? (Does your answer to this question bother you? Why?)
4. What about boys names and girls names that start with "a"?

#3 She wasn't long for this dataset

1. What is the longest name in the dataset? How many boys/girls names are exactly that length? What's going on?

#4 Sum it up for me

1. How many total boys and girls are described in the dataset?

#5 Name twins

1. On average, how many "names twins" will a baby born in 2021 have (i.e., how many other children will share their name)?
2. How many "name twins" will a boy have on average? How about a girl?
3. Create a list of names where 90% of the children with that name are listed as girls? And the same for boys?
4. Now create the same list but only include names that are given to at least 1000 children total. Why are the answers different?

#6 Write it out

1. Create a tab separated values file that includes each letter of the alphabet (a-z), the number of unique names for that letter for all girls. Be sure to include a descriptive header columns!
   1. Now do the same for boys (be sure to save it into a different file!)
   2. Once you've done this, load up the two files into Google Sheets or Excel.
   3. For every letter, be ready to tell if there are more boys names or girls names.
   4. Play around with graphing and see if you can build some instructive graph that shows us something.

Note: Obviously, you won't be able to include your Google Sheet result into your notebook. That's OK but just be ready to describe what you found!

#7 Something extra

1. Discover at least one fact about the names that is not listed above.