Challenge #141: Examination Data Simulation

Generating sample data to represent a population is key for many types of analyses! In this workflow, we have a list of 1000 people and we want to simulate a a test score for each person. For each person, randomize a score for the exam, but we're not going to make it that easy!

You'll need to generate the simulated scores under these conditions:
1) The lowest possible test score is a 50%, while the highest is a 90%
2) The simulated score must be 'randomly' generated as a normal distribution, where the population mean is 70%.
3) After creating the simulated test results, build a chart view to prove you have achieved a 'random' normal distribution by binning each score to the nearest point.

Stuck? Hint 1

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Did I say 'simulation'?

Hint 2

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You might have a hard time without the free predictive tools installed.

Hint 3

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Oh, cool! There's a tool that simulates sample data! *Cough* Simulation Sampling *Cough* *Cough*

challenge_141_start_file.yxmd

challenge_141_solution.yxmd

Reporting

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Preparation

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Data Analysis

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Accepted answers

All comments

patrick_digan

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challenge_141_start_file.yxmd

CHarrison

Challenge 141.yxmd

neilgallen

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challenge_141_NGA.yxmd

JEBS

challenge_141_solution_Simulation_Sampling_JEBS.yxmd

Justin_0

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Thanks to that one tool, that was much simpler than I thought it would be. Just had to figure out how to get it configured, then it was all down hill.

141.yxmd

CharlieS

Challenge_0141-CharlieS_Solution.yxmd

ggruccio

Mine looks a lot like the picture - first time using this tool!

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Not sure why 5 standard deviations seemed to work. It just was where the extremes became 50 and 90. Was trying to calculate what it 'should' be, but began experimenting with the setup...again limited experience with this tool....will have to read more about it!

challenge_141_gg_finish.yxmd

kat

It was time to try out the Python tool

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Challenge #141 graph.PNG

Challenge #141.yxmd

jasperlch

Solution attached.

challenge_141_JL.yxmd

sprodger

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challenge_141_SP.yxmd

NickC

Excellent challenge. Never used the simulation tools before so very pleased to get some exposure to it!

Turns out it was easy to configure.

challenge_141_completd_file.yxmd

olivia_paquot

First time with this tool ! Not so easy :-)

challenge_141_start_file.yxmd

danilang

A little bit "Abbie" Normal

but Igor would approve

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Dan

challenge_141_solution_dl.yxmd

danilang

V2.0. Inspired by @kat's Python implementation of the Box Muller algorithm, I present a version implemented in a single formula tool

Results 2.png

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Dan

challenge_141_solution_dl_V2.yxmd

WilliamR

New Workflow1.yxmd

robertlenius

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challenge_141_RL.yxmd

KevinW

I used a larger standard deviation (15), so my clustering is further from the mean (but the average is still 70). Still on version 11.7, so no new interactive charting tool

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challenge_141_solution.yxmd

kat

nice work @danilang! I still need to do my V2.0

KlaraKeutel

Nice tool! Tried multi-field binning first, but simple rounding seems to do the better job..

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challenge_141_klarassolution.yxmd

Ladarthure

My solution, didn't get a perfect normal distribution but nearly like it

challenge_141_start_file.yxmd

TylerNa

Yet again the weekly challenge introduces me to a "new to me" tool.

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Workflow

Output

WC141 Test Score Sampling.yxmd

GarthMiles

well that was fun! I rarely play around with some prescriptive tools.

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Screen Shot 2018-11-13 at 5.41.35 PM.png

challenge_141_solution.yxmd

SamDesk

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Alteryx_17024_0828fbbd-d495-49ee-b68d-68ae7422f20b_.png

Sam

challenge_141_start_file.yxmd

Hakimipous

Wow my first time using this tool

Thanks for the challenge!

challenge_141_start_file.yxmd

Data2KPI

Mine has a bit more color. Fun little exercise.

challenge_141_start_file-Solution.yxmd

unknown

CE challenge_141_start_file.yxmd

clant

Here you go! Unrelated but in the same category, are there any good guides for using the optimization tool? I have seen a few examples however I am really struggling to get my head around how to configure this correctly.

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challenge_141_Fin_file.yxmd

JoeM

@clant you can check out our 1 hour training on it here: https://community.alteryx.com/t5/Live-Training/Live-Training-Introduction-to-Prescriptive-Optimization/m-p/148048

or check our our relatively new tool mastery on it here: https://community.alteryx.com/t5/Alteryx-Knowledge-Base/Tool-Mastery-Optimization/ta-p/306117

wenjuanchen

Solution attached. I do not have interactive charting tool as I am using Designer 2018.2. So I tried Scatterplot tool. The plot is not bad.

BTW, @JoeM, beside Alteryx Help, is there a place that I can find more explanation on the meaning of Seed in the tool configuration? Thank you so much.