# 빅분기 필기 - 빅데이터분석기사 CBT 개념 문제은행 > Big Data Analyst Written Exam Concept Study, 5,000 Questions, and 12 Mock Exams. Statistics and Modeling include the solution process. Canonical page: [https://chrome-stats.com/d/dev.daylab.bigdata](https://chrome-stats.com/d/dev.daylab.bigdata) ## Overview - **ID:** `dev.daylab.bigdata` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** DayLab - **Category:** EDUCATION - **Downloads:** 245 - **Version:** 1.0.0 - **Last updated:** 2026-08-04 - **First published:** 2026-08-03 - **Publisher country:** KR - **Size:** 104 MB - **Data as of:** 2026-09-10 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=dev.daylab.bigdata) - **Website:** [https://dayprep.co/bigdata](https://dayprep.co/bigdata) - **Privacy policy:** [https://dayprep.co/bigdata/privacy](https://dayprep.co/bigdata/privacy) ## Description For the Big Data Analyst written exam, how you review is more important than how many problems you solve.

DayPrep focuses on a learning flow that highlights your weaknesses and brings back problems you've already solved before you forget them. You can study seamlessly within a single app, from concept learning to over 5,000 self-created problems across four subjects, practice mock exams, error notes, and FSRS smart review.

[Key Features]

Concept Learning Tab

You can organize concepts before solving problems. The 41 chapters across four subjects are divided into 117 lessons; you can read through core concepts and then move directly to related problems.

Over 5,000 Self-Created Problems Across Four Subjects

You can study the entire scope of Big Data Analysis Planning, Big Data Exploration, Big Data Modeling, and Big Data Result Interpretation, organized by subject and chapter. These problems were created in-house based on the publicly available official exam scope and learning objectives. Statistics and Modeling Calculations: The Process

For problems that require manual solving, such as sampling, test statistics, and model evaluation metrics, the app does not just provide the answer but shows the calculation process step by step. This allows you to pinpoint exactly where you made a mistake.

Engineering Calculator

For problems that cannot be solved using basic arithmetic, you can open the in-app engineering calculator to perform the calculation immediately. This allows you to continue solving the problem without leaving the screen.

Memorization Tips

Concepts and formulas that are easy to confuse are summarized in short memorization tips. Check them on the spot when you get stuck while solving a problem.

Answer Explanations and Detailed Option Analysis

Check the correct answer and key explanation for each problem. The detailed explanation allows you to examine key concepts and each option together, helping you understand why you were confused.

Problem Solving by Subject and Unit

Select the subjects and units you want to study. On the "All Problems" screen, you can use search, filters, and sorting to find the problems you need.

Start Diagnosis and Today's Recommendations

Initially, you check your current status with diagnostic questions. As your study history accumulates, the app guides you through recommended sets that reflect your weak subjects and problems to review. FSRS Smart Review

Adjusts review intervals for each question based on your memory status. Since it collects and displays questions due for review, you do not need to calculate your schedule manually.

Review Notifications

Notifies you of today's study and review at the set time. This helps you maintain a consistent study flow.

Weakness Heatmap and Question Frequency

Compares correct answer rates by subject and unit using color coding. You can identify weak areas and question frequency by unit, and jump directly to the relevant questions.

Incorrect Answer Notes and Questions to Review

Incorrect answers are automatically collected, and you can manually add specific questions to your review box. Leave your own notes for each question to review together during your next session.

12 Practice Mock Tests

Solve 80 questions across 4 subjects, tailored to the official exam format, within 120 minutes. Select any set from the 12 available and check your results based on a minimum score of 40 points per subject and a total score of 60 points. Your highest score and test record are also managed. Learning Status and Continuous Study

On the Home screen, you can check the number of questions solved today, cumulative correct answer rate, progress by subject, and consecutive study days. You can also view your highest mock exam scores and study records.

Exam Schedule D-Day

Check the upcoming Big Data Analyst exam schedule and remaining days directly on the Home screen. You can also select the specific exam session you are preparing for.

Pre-Exam Checklist

As the exam approaches, review your preparation items, such as the test center, entry time, exam admission ticket, identification, and permitted calculator.

Light/Dark Theme

You can customize your system settings or select between Light and Dark themes.

Offline Study

Question data is securely stored on your device, allowing you to continue solving problems and reviewing even in areas with unstable internet connections.

Guest Start and Device Sync

You can start immediately without signing up. Once logged in, your study records, review schedule, incorrect answer notes, and memos are synced to your account, allowing you to continue studying on other devices.

[Content Guide]

Questions and explanations are created in-house based on the publicly available official exam scope and learning objectives. We do not restore or reproduce actual exam questions.

Advertisements may be displayed for free users, and premium users can access additional benefits such as ad removal.

This app is an independent private learning tool and is not affiliated with or represented by any exam administering body, government, or public institution. We do not guarantee passing the exam; please check the official announcements from the administering body for exam information.

[Recommended for]

Those preparing for the Big Data Analyst written exam for the first time

Students aiming to pass through self-study

Those who frequently get stuck on statistics and modeling calculations

Those who find it difficult to manage their own error analysis and review schedules

Those who want to review material in short bursts during their commute

[Customer Support]

Inquiries: contact@daylab.dev

Terms of Use: https://dayprep.co/bigdata/terms

Privacy Policy: https://dayprep.co/bigdata/privacy

© 2026 DAYLAB

[Content Source and Non-Governmental Information]

This app is an independent private learning tool designed to assist with studying for the Big Data Analyst exam. We have no affiliation, sponsorship, or approval relationship with implementing agencies, the government, or public institutions, such as the Korea Data Industry Promotion Agency, and do not represent any of them. We do not act as agents for government agencies or political organizations, nor do we guarantee passing. Please check the latest announcements from the implementing agencies below for the exam schedule and detailed criteria.

Official Exam Schedule, Registration, and Subject Information: https://www.dataq.or.kr/www/sub/a_07.do ## Rankings - #1,632,644 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.CAMERA` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.POST_NOTIFICATIONS` - `android.permission.READ_APP_BADGE` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.RECORD_AUDIO` - `android.permission.SYSTEM_ALERT_WINDOW` - `android.permission.USE_BIOMETRIC` - `android.permission.USE_FINGERPRINT` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `com.anddoes.launcher.permission.UPDATE_COUNT` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.google.android.c2dm.permission.RECEIVE` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` - `com.htc.launcher.permission.READ_SETTINGS` - `com.htc.launcher.permission.UPDATE_SHORTCUT` - `com.huawei.android.launcher.permission.CHANGE_BADGE` - `com.huawei.android.launcher.permission.READ_SETTINGS` - `com.huawei.android.launcher.permission.WRITE_SETTINGS` - `com.majeur.launcher.permission.UPDATE_BADGE` - `com.oppo.launcher.permission.READ_SETTINGS` - `com.oppo.launcher.permission.WRITE_SETTINGS` - `com.sec.android.provider.badge.permission.READ` - `com.sec.android.provider.badge.permission.WRITE` - `com.sonyericsson.home.permission.BROADCAST_BADGE` - `com.sonymobile.home.permission.PROVIDER_INSERT_BADGE` - `dev.daylab.bigdata.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `me.everything.badger.permission.BADGE_COUNT_READ` - `me.everything.badger.permission.BADGE_COUNT_WRITE` ## Similar extensions and apps - [Data Analyst Prep: SQL & Excel](https://chrome-stats.com/d/com.data.analyst.prep) — 21,023 users - [빅데이터분석기사](https://chrome-stats.com/d/kr.co.wikiacademy.bigdata) — 3,351 users - [정보처리기사 필기 기출 2026 - 정처기 CBT](https://chrome-stats.com/d/com.insu.infoquizmaster) — 208 users - [Data Analytics Exam Prep 2026](https://chrome-stats.com/d/aplus.exam_dataanalytics) — 183 users - [データサイエンティスト検定 試験対策](https://chrome-stats.com/d/com.rumahsaku.ds) — 64 users - [Databricks Cert Exam Prep](https://chrome-stats.com/d/com.nicheelab.databricksexam) — 89 users - [가벼운 정보처리기사 필기 기출문제 - 시험대비 문제풀이](https://chrome-stats.com/d/hoho.examengine.ipe) — 8 users - [재경관리사 - 회계 자격증 모의고사 문제은행](https://chrome-stats.com/d/dev.daylab.jaegyeong) — 68 users - [Big Data and Hadoop Test prep](https://chrome-stats.com/d/com.nupuit.bigd) — 361 users - [Big Data and Hadoop Test PRO](https://chrome-stats.com/d/com.nupuit.bigdp) — 2 users - [정보처리기사 실기 프리패스 : 기출 & 암기 무한반복](https://chrome-stats.com/d/com.examstudy.app) — 150 users - [문제은행 OnCBT: 기사·산업기사·기능사 기출 CBT](https://chrome-stats.com/d/com.oncbt.app) — 101 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/dev.daylab.bigdata)