Day 16 of improving my Data Science skills

Source: Dev.to

Introduction to Statistics in Python – Measure of Center

Over the weekend I started the Introduction to Statistics in Python course. What stood out for me was numerical summary statistics—measures of center. They help us summarize our data, but choosing the correct “average” that truly represents the data is very important; otherwise we will be fooled by extreme values.

Data can lie if you use the wrong average

Imagine five kids with these allowances:

• ₦100
• ₦120
• ₦110
• ₦130
• ₦1,000,000

Mean vs. Median

• Mean – use when the data is symmetrical (evenly spread).
• Median – use when the data is skewed (contains very big or very small values).

Real‑life example

Recruiters report median salary rather than mean salary, so a single billionaire doesn’t distort pay expectations.

Learning this again helped me understand the topic more clearly. Even on days when learning feels heavy, I’m grateful for every concept I now understand better than yesterday.

— SP 🤍