Why I Built a Simple Average Calculator (and What I Learned About Data Clarity)

A few weeks ago, I was working on a side project involving stock performance tracking. I needed to calculate different types of averages — mean, median, and weighted average — across datasets like daily closing prices, trade volumes, and returns.

Of course, I could’ve used Excel or a quick Python script, but I wanted something lightweight, fast, and web-based that anyone could use without needing coding knowledge. That’s what led me to create a simple Average Calculator tool.

Comments

[Henry Jon]

This is actually really cool. I never realized how much a simple average could mess up real-world data if you don’t consider weights. The stock example really hits home — I’ve been doing that wrong for months

[Devid Smith]

thanks

[Robert Smith]

Love how you explained this. I work with analytics dashboards, and people underestimate how important weighted averages are. Sometimes just using the wrong type of average completely changes the story your data tells.

[Devid Smith]

thank you dear

[Yoshi Truchi]

I tried your average calculator and it’s actually handy for quick math. Especially like that it works on mobile — great little tool for finance and students alike

[Devid Smith]

thank you for intrest

[boiki keaitaya]

I'm new to DEV community. First post to interact with. Had a look at your calculator app. Threw some random numbers at and it spits out the correct juice. Thanks for sharing.