3 Types of Data Science Interview Questions

HOW DO I GET A TECH JOB?
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Follow me on instagram for LIVE VIDEOS! instagram.com/jomaoppa/

[@reverend900]

I have 5 years experience as Oracle developer/data modeler. Now I am trying as data analyst(Hive/Pig) etc.. What are your suggestion who are trying to jump in diff. wagons? Love all your vids.. East or West Joma is the Best

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Joma's insta stories are great! Way cooler than those KZbin videos. Also why I decided to support him on Patreon.

[@user-zk3bc6cc2g]

kajima

[@engliyan9158]

Ethan Coulson )

[@firasbouhamdan8603]

Do I have to be smart to be a data scientist?

[@jagicyooo2007]

"Tell me you want me" was the primary reason for rejection.

[@danielprice538]

This video helped me pass my data scientist interview! Thanks!

[@jomakaze]

LOOOL

[@martin.m2]

Fr?

[@silinchen2102]

This video has only been released for an hour. You are tripping.

[@martin.m2]

This video cured my depression though

[@techbro9652]

same

[@sophieblooming8555]

Entertainer trapped in a nerd’s body, or vice versa. The best teacher can make you laugh and think.

[@stanger963]

I got more information about interviews and companies on your channel than all other places combined. You're amazing

[@nmmichalak]

I love your videos! I had one quibble about your SQL solution to #1. If some publishers have more videos than others, then their video durations will affect the mean. You could imagine one publisher with 10,000 videos and 9 publishers with 10 videos. In this case, the average duration of that one super-publisher's videos will have way more influence on the mean than the other publishers. I think your question is better answered by first computing an average for each publisher and then averaging those averages. (of course, this detail may not matter in an interview)

[@inchinaxp8663]

Hey Joma, thank you for this. As someone wanting to get into DS, this helped me.

[@inscrutability11]

So glad that I found your channel so early on. Please don't stop producing content!

[@ajieprayoga2434]

Smart channel, subscribed! Keep it up, Jomaa!

[@yanrice2]

About to go into a boot camp. Just made this video one of my favorite

[@neloangelo__13]

Lost it at the STD Probability question lmao

[@jomakaze]

Bruh!

[@CGExp]

It's actually a classic Bayes theorem question. Probably in every Bayes theorem book ever written. Hiv is often replaced by cancer in them though

[@ah2522]

@@CGExp Bayes died from an STD because of this

[@alefratat4018]

Let p be the proportion of positive among the population (here p = 1%) Total number of *tested* positive = False Positive + True Positive = 1% of (1-p) + 99% of p Prob of having the disease when tested positive = True positive / Total number of *tested* positive = 99% of p / ( 1% of (1-p) + 99% of p )

[@user-nl9ll1bj9i]

Ale Fratat but if Joma tested positive and the test is right 99% of the time why is the answer 50%?

[@junaidchoudhary9110]

Man your film making skills is lit AF seriously, keep it up!!

[@rana31ify]

Joma you are the casey nietsat of tech community the content you create and the way your tell story awesome, long way to go I have a huge respect to you man wish I could work with you in any way. Keep doing the good work 🙏🏼

[@ruslanuchan8880]

Funny and informative as usual! Thanks for the vid Joma

[@huangmaurice1672]

I am a total fan of this type of videos. Joma, please make more of these educational clips.💪🏻

[@datanerd112]

Your content is amazing. I really like all your videos about DS. I wish you do more related ML/DS. Thank you so much for making this video, I've been preparing for interviews.

[@tommoritz79]

Thank you for all that great content!

[@captnmaico6776]

I once had a question, how the regressor would look like without any coeffecient except the intercept in a linear regression. Could not answer it right away, but got the to the answer after a couple of mins. I asked the job interviewer if anyone ever got it right after immediteatly and he said only one, but he did not hire him. So don't worry question aren't everything, its got more to do with the way you handle the situation with dignity and without being a liar. Also keep your head up, iwrote hundred of applications and still ended up at a big corp.

[@vikasjaiswal2377]

I think the answer is a line parallel to x-axis(considering 2D) since the slop term(w) is zero.

[@captnmaico6776]

technically thats right, as it hold true for any function with only a constant term. But he was asking specifically for the definition of the regressor in an OLS regression. Its the mean of your y's also being a constant, cuase: sum sign ei^2=sum sign (yi-a)^2 -> differiante after a = sum sign yi - n*a =0 sum sign yi =n*a 1/n * sum sign yi=a mean(yi)=a so a is indeed a constant and the mean of your yi's

[@aarzooverma4880]

This is the super cool video I've ever watched regarding the interview questions. Loved it ;)

[@Austin-wh4yi]

Thanks for taking the time to show some actual sample examples.

[@emilyyang3478]

This is great sum up I had an onsite this week very similar to this structure. And the watching dududu part is hilarious because I was also watching bp MV for hours lol

[@CommandoMaster]

Thanks for the tips boi>

[@maximtheconqueror]

This guy does a great job adapting styles from common TV shows to his KZbin channel

[@josecarlosgarcia6477]

This is the best data analysis video I've ever seen. Thank you very much.

[@crystyxn]

Wow the STD question was straight out of my A.I. exam!!

[@foxskinn]

LOL so tru everytime I call my mom she never picks up 😭😂

[@randyhoang7264]

Joma, make more of these kind of videos (entertaining interview prep videos). Thankz

[@MrPrashantbagga]

Love it! you are amazing

[@Melgazar9]

I think this is a good video for suggestions on how to get a data science job at a larger company. However in my experience data science interviews at non-large companies put a huge focus on machine learning/deep learning, linear algebra, statistics, core python programming (sometimes R), SQL, spark/AWS/GCP, and data visualization (tableau, matplotlib, R)

[@xiaoyang8075]

Soooo true. I got refused by many small company in data science but get interviews from large ones cuz I don’t have deep learning skills. The startups wanna takeover the world

[@captnmaico6776]

The reason is simple, its diversity. In a big company workers are far more specialzid and therefore you don't need a data scientist thats able to do everything. Im working as a fraud data scientist/analyst at a big corp and hardly ever do any SQL or spark/aws and stuff related to deploying, because we got business engineers and data specialists, who far better at it and do it 24/7. My task is to evaluate and built the current models and hard blocking scores of fraud behaviour in the system. In a small company budget contraints are far far harsher and tehrefore a good CS guy who is able to perform basic tasks in most stuff and some deep sheet is more efficient for them cost wise. For the people working at startups its usually hell on earth, especially if payment is low and working load big. Been there done that, never again.

[@MoreParksLessParking]

In the above comment, @@captnmaico6776 explains that he is a "fraudulent Data Scientist", who is able to get away with keeping his job because his company is over-employed. Therefore there is always someone else who can do his work for him. He recommends only working for big companies rather than small start-ups, as only they will be able to support this form of parasitic lifestyle.

[@captnmaico6776]

@@MoreParksLessParking sure thing, you know my life and cv do you? In europe people at startups arent paid huge salaries and cant afford basic stuff depending on their location. Its not silicon valley and furthermore, Fuck off dipshit.

[@jessicasoares9613]

Hahaha, I loved this video! Joma, you are so funny and give such valuable tips! Thank you for sharing :)

[@MLwithAlva]

LOL very impressive that you can make a video about interview questions so fun to watch 😂 🙌

[@jomakaze]

Thank you thank you :), I try

[@buildwork5177]

Joma Tech bs reply

[@axcelleria]

He looking for girl :3

[@justinzint4666]

Thank you for this! I've been interviewing quite a bit lately and this is super helpful. Brilliant was also the first app listed in my app store after watching this. Weiiiiird

[@jomakaze]

ooo interesting... big brother is watching

[@EmileAI]

Congrats for the 100k !!!

[@Awesomousprimo]

The intro HAHAH! You're such a unique KZbinr!

[@shreedharraj6777]

Thank you for this video! its very helpful

[@patsukhum8145]

Really loving your new videos. Keep them coming!

[@jomakaze]

thanks Pat!

[@manojmajumdar3815]

Hi Joma, please make a video on what kind of work someone will get engaged in after getting selected as a Data Scientist, probably tell us what you have been doing lately as a data scientist.

[@yoosunglee2423]

His videos are my guilty pleasures

[@ledarkpoet]

I’m so thankful for this video:

[@prakashyadav008]

"when suddenly i felt useless and pathetic." - encompasses many people's life's on weekends

[@anirudhupadhyay695]

This guy is funny!!! and helpful at the same time. Love from India brother!

[@CrazyMoments728]

This is the Joma that we want!

[@ulgk]

I am amazed by your discipline to read/relearn many chapters for the data science questions. Recently, I have graduated from a university with a bachelors in decision science (with emphasis in data analytics). This degree is from the business college. To get prepared for the interview is quite ridiculous in my opinion because you have to know or retain a lot of knowledge. SQL, Python, and R are the programming languages I have to vigorously study. I need to be more disciplined like you. Anyway, thanks for the video.

[@wellbrix1808]

Nice video. Thanks. Little mistake @ 3.36 secs with Bayes. Should read denominator 1%x 99% + 1% x 99%

[@oleksiifalei2074]

@jomaoppa I think you made a typo at 3:35. It should be 1% x 99% + 99% _x_ 1% instead of 1% x 99% + 99% _+_ 1%

[@utkarshasthana3853]

Thank you! for past 30 mins I was googling a bayes formula that looked like that

[@bigorange6328]

Oleksii Falei I agree

[@kswill4514]

agreed

[@InternetMadnez]

Ah right. I put the same message. 😅😂

[@amawest_]

Ok, good I'm not crazy lol

[@michaelnguyen418]

Hi Joma, is it possible that you start a video on how to start a career as data scientists/analytics? I'm really intrigued with that. Thank you!

[@andyanderson222]

Man, i just love your sense of humor!

[@synckid]

Bro awesome vid shows allot of effort

[@khacquyinh3476]

It is really impressive!

[@edabbas]

Love your videos 😂 Funny and helpful, thank you brother

[@GamerDoubleTwo]

Thanks for another great video. Was worried about the equation, wrongly typed. Though the answer is correct.

[@battilanast]

Quite like the way you subtly baked an explanation for the a/b testing since there were some requests for that in the comment section from the data science pyramid video

[@KhoiThinh]

I'm sure everyone would love to hear about some materials you've gone through to follow this DS path. Getting an internship is impossible in Japan.

[@jomakaze]

Yea it's a little harder in Japan,

[@neloangelo__13]

maybe try another country I reckon? Unless you are Japanese by birth, getting a job this field is tough as, almost zero chance.

[@KhoiThinh]

In Japan, all the positions they're hiring are almost senior title with at least 5-7 years of experiences so yeah, it's very tough for me. I would definitely consider another country to the pursuit of this career path in the future. Thanks bro.

[@kevind97]

Yet again. Another great video and helpful video about DS for a college student. Love the content and I don't know if you want to leak your resume info.

[@shashankraman2512]

Watching this video for the fourth time now and still it cracks me up! ;)

[@nickn9040]

Makes me so happy that he had to review too lol. 1 year after getting my MS I still would have to review basic probability. E.g. probability distributions, Bayes theorem, etc. Same with the SQL question.

[@crediblesalamander8056]

I only finished my probability course(beginner) a few months ago and I still couldn't answer that easy Bayes's' Theorem question.

[@alwardafahd2887]

Hi Jonathan, great video. which software you used to build your resume. looks neat

[@bedantasaha5699]

I am fan of your channel for a long time now and I am a google product analyst interview in 4 days and I am banging my head instead of something else. This video popped up to my suggestion and watched again to relax a bit. By the way there is a typo in the denominator of the Bayes’ Theorem. Keep up good work!

[@KrushnaBorkar]

Thanks Joma ..That's what I was looking for...😀

[@jomakaze]

perfecto

[@partyushkumar4014]

Buddy this is sooooooooooooooo Helpful ✌️

[@ShaoVideoProduction]

This is great! :'D

[@falcxne]

Hey Joma - the new thing now in Data Science interviews is 'modelling' questions (makes sense, really). Curious if you would do a video on how to prepare for that? For many companies, that is the make-or-break portion of the DS interview process.

[@wrcz]

u must be rly cute to succeed at modelling

[@ayoni02thebadgamer39]

@@wrcz 😐

[@avanishpatel4936]

Awesome video content bro 👍👍👍

[@varunmj5482]

Thanks Joma

[@stevengarcia7277]

I am getting ready for my last technical interview , thanks for this video.

[@HeatherHolt]

I’ve been stressing over quitting my current job to finish my studies and finally look for a job in data analytics so thank you for making me laugh while also providing useful information.

[@HeatherHolt]

@code with nikhil well, I quit my job at Apple. Went to school to finish my coding education. Got a job and two months later, COVID came and the whole place shut down. Then I had a baby and now I’m getting ready to start working again. After two years of not working. Life is unpredictable! :)

[@sethnuzum]

Joma and The Techlead collab please, pretty please

[@kubuspat9729]

that would be great

[@TheJFMR]

Joma Techlead

[@chuddywarrior7996]

with sugar on top

[@2323TheViper]

I really love your channel, it has helped me understand what DS really is. I am an incoming freshmen and will be pursuing DS!! This seems hard right now but as the years go this will all make sense. Keep up the good work.

[@furryannilator4528]

How u doimg rn

[@etiwardanis5688]

Love to watch your videos.

[@DarkyMoto]

Same lol i was watching blackpink before i had my recent Data Science interview 🤣

[@90emcee33]

Loving the vids man. I’m in tech and am in So Cal. Where you’re at do they really let you go to interviews in jeans and a hoodie?

[@Zitttt89]

Omg blackpink!!! I love this group. I really like your Chanel, it’s really helpful for me(statistics major&math)!

[@JGunlimited]

Intro was gold

[@ashokvj8342]

Ur great jomaa

[@pred9990]

Thanks!

[@pakersmuch3705]

Thx!

[@nalongsonedanddank7521]

Thankssssssssss Joma.

[@yanaismail8431]

Great vid may i know what type of laptop you use for your data science work

[@yuqingy5308]

Thank you Joma oppppppppppa!

[@txxxchao]

Great sense of humor!

[@alexm6697]

Great video... Keep it up bro

[@jomakaze]

thanks alexandros

[@aazibyousaf2683]

Hi Jonathan, awesome video. Please rate the online data science or big data courses and share your opinion regarding if they are any good in landing you a job vs a Masters in CS.

[@prakashyadav008]

this is one of the funniest of ur videos.

[@AbdulWahab-oo4fo]

Damn, dude you're quite the hardworker.

[@turbogt4410]

great video again

[@shashankravichandran6229]

Could you do a video on internships for quants?

[@probability162]

Hi Joma, I would love to ask some questions about the start-up. I hope you can give me some form of answers to my questions.

[@mviking90gaming80]

Deqr Joma I need your help: now am going through a change in my career path from web development to data science and analytics, not only because the high salaries in Dubai where I live currently, but because I loved it. as a first step I enrolled in a path course which is "become a data scientist". It is a long intense course. Now, since this course included the 3 types you mentioned, is it gonna be enough to at least acquire am entry level job? One more question, if I kept learning amd applying and maybe working on projects wither my own or an open source, does this counted as am experience?

[@kamaleshpramanik7645]

This is an awesome video ...

[@jerryanyu8467]

Joma, you create good videos for CS majors. We don't need more of "How I learned to code" or "how I got into Google" KZbinrs. Keep it going!

[@MsBluSpot]

JT - thx much for sharing----JT why did u do an inner join o the second ans ? The joins always get me. Is there a guide that explains when to use which & under what circumstances ? ----u r boss !

[@faraichuchu7671]

Awesome!

[@jomakaze]

Thanks homie

[@andresr5847]

Hey Joma! I work as a valet attendant at Facebook building 20 and am also a SE student at SJSU. I think i saw you today in the cafeteria during the Japan and Belgium game today. (in a grey hoodie) just wanted to say that i am a big fan and thank you for making funny and informative videos because I’m the future I would love to work up there rather than down here in the parking lot -Andres

[@andresr5847]

*in

[@ryansam]

Hey Joma, I plan to move to San Francisco soon and since you kind of recently got a new apartment I was wondering what the options are with a software engineering salary. Could you possibly make a buying guide or even just make a video on how you got your apartment? It's looks pretty nice from what I saw on one of your older videos. Nice apartments that I've seen online seem to be around 3k - 6k mark for like a two bedroom. I think it would be a cool video idea and really helpful for people who are about to start their career.

[@saltedCHaramel]

Other than the math part for DS, what should I learn in the “more computer sci” part? i.e. natural language processing, parallel computing etc? I am currently enrolled in a DS course in Uni and they allow us to choose CS modules. Would really appreciate it if anyone could tell me, thank you so much ! (Tried Google -ing but nothing useful though)

[@byronwilliams7977]

I started watching your videos for the content, but stayed cause you're legit funny man. Keep up the great work.

[@tumo6431]

4 years working for advertising agency as a strategy planner , and don't wanna stick on this job anymore. I really wanna to learn more about marketing research. But when I watched your video, you inspired me to discover more data science. I will study data science at Silicon Valley next year. Hmm, I'm really nervous a little bit, but do you think could I become a data scientist when I'm 26?

[@RamkrishanYT]

We miss you dude

[@kctv1193]

hello joma great video!!! please which programming language would you recommend for one to learn.?

[@gouravkumar9011]

Woah this is useful