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totemlight t1_iutxe90 wrote

Reply to comment by SteinbeckSawIt in US Credit Card Loans v. Personal Savings Rate [OC] by rosetechnology

Eli5. What’s happening here?

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OsteoRinzai t1_iutxrjb wrote

On the Y-axis, one is a number, the other is a percentage. This is a no-no

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perec1111 t1_iuv8s2g wrote

Why? If you focus on sudden changes in trends, you clearly see something interesting here.

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L1veFree t1_iuvfxq7 wrote

You're not wrong in the sense that trends still tell a story, regardless of units. But this is definitely a misuse of data for storytelling.

You're looking at $total-cc-loans (sum of all people) vs %savings (average of all people). Why not %loans-per-person vs %savings-per-person? Or $loans-pp vs $savings-pp?

OP has normalized one of the values (then scaled it to 0-50% for dramatic purposes) but OP didn't normalize the other.

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perec1111 t1_iuvi3w1 wrote

I think everything you listed is personal preference, and I see good reasons for both of the decisions OP has made. Telling a story is such a buzzword here, it is starting to lose its meaning on this sub.

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SteinbeckSawIt t1_iux5mbi wrote

Homie, it's not personal preference, it's best practices.

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perec1111 t1_iux6h3o wrote

Depends on what you want to see/show. Go on with gatekeeping though, it’s fun!

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jasperCrow t1_ivz55kb wrote

Best Practices is more or less the best technical standard, its not your opinion 😂. He's not gate keeping, he's telling you how experts analyze data, and WHY.

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perec1111 t1_ivzjmsp wrote

Is he? Are you an expert? If you really think about it, can you really not come up with just one reson to visualise data this way? If everything is rules by those best practices, why do we need experts to think about it? A high school junior could do your job then.

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