Search test library by skills or roles
⌘ K

Data Science Assessment Test

About the test:

The data science assessment test evaluates a candidate's proficiency in statistics, probability, linear & non-linear regression models and their ability to analyze data and leverage Python/ R to extract insights from the data.

Covered skills:

  • Data Science
  • Data Visualization
  • Machine Learning Techniques
  • Data Science Aptitude
See all covered skills

9 reasons why
9 reasons why

Adaface Data Science Assessment Test is the most accurate way to shortlist Data Scientists



Reason #1

Tests for on-the-job skills

数据科学在线测试可帮助招聘人员和招聘经理从简历中确定合格的候选人,并有助于做出客观的招聘决策。它减少了采访太多候选人的管理开销,并通过滤除了不合格的候选人来节省昂贵的工程时间。

Adaface数据科学测试筛选典型技能招聘人员在数据科学家中寻找的候选者:

  • 使用R工具,Python和机器学习技术的专业知识
  • 能够清洁和准备数据进行分析
  • 建立强大的机器学习模型的经验
  • 了解线性和非线性回归模型
  • 具有探索性数据分析和回归分析的经验
  • 数据可视化工具的专业知识

招聘人员和招聘经理可以使用此评估产生的见解,以确定该角色的最佳候选人。反交换功能使您能够在线进行评估。数据科学测试非常适合帮助招聘人员确定哪些候选人具有在工作中表现出色的技术技能。

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface ->
Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

These are just a small sample from our library of 10,000+ questions. The actual questions on this Data Science Assessment Test will be non-googleable.

🧐 Question

Medium

Amazon electronics product feedback
Solve
Amazon's electronics store division has over the last few months focused on getting customer feedback on their products, and marking them as safe/ unsafe. Their data science team has used decision trees for this. 
The training set has these features: product ID, data, summary of feedback, detailed feedback and a binary safe/unsafe tag. During training, the data science team dropped any feedback records with missing features. The test set has a few records with missing "detailed feedback" field. What would you recommend?
A: Remove the test samples with missing detailed feedback text fields
B: Generate synthetic data to fill in missing fields
C: Use an algorithm that handles missing data better than decision trees
D: Fill in the missing detailed feedback text field with the summary of feedback field.

Easy

Fraud detection model
Logistic Regression
Solve
Your friend T-Rex is working on a logistic regression model for a bank, for a fraud detection usecase. The accuracy of the model is 98%. T-Rex's manager's concern is that 85% of fraud cases are not being recognized by the model. Which of the following will surely help the model recognize more than 15% of fraud cases?

Medium

Rox's decision tree classifier
Decision Tree Classifier
Solve
Your data science intern Rox was asked to create a decision tree classifier with 12 input variables. The tree used 7 of the 12 variables, and was 5 levels deep. Few nodes of the tree contain 3 data points. The area under the curve (AUC) is 0.86. As Rox's mentor, what is your interpretation?
A. The AUC is high, and the small nodes are all very pure- the model looks accurate.
B. The tree might be overfitting- try fitting shallower trees and using an ensemble method.
C. The AUC is high, so overall the model is accurate. It might not be well-calibrated, because the small nodes will give poor estimates of probability.
D. The tree did not split on all the input variables. We need a larger data set to get a more accurate model.

Hard

n-gram generator
Solve
Our newest machine learning developer want to write a function to calculate the n-gram of any text. An N-gram means a sequence of N words. So for example, "black cats" is a 2-gram, "saw black cats" is a 3-gram etc. The 2-gram of the sentence "the big bad wolf fell down" would be [["the", "big"], ["big", "bad"], ["bad", "wolf"], ["wolf", "fell"], ["fell", "down"]]. Can you help them select the correct function for the same?
 image

Medium

Green or red balls
Solve
A bag contains 5 red balls, 6 yellow balls and 3 green balls. If two balls are picked at random, what is the probability that both are red or both are green in colour?

Hard

Square points and Circle
Solve
What is the probability that two uniformly random points in the square are such that center of the square lies in the circle formed by taking the points as diameter

Easy

Frequency distribution
Solve
Convert the following into an ordinary frequency distribution:

- 5 users gave less than 3 rating
- 12 users gave less than 6 rating
- 25 users gave less than 9 ratings
- 33 users get less than 12 ratings
 image
🧐 Question🔧 Skill

Medium

Amazon electronics product feedback
2 mins
Data Science
Solve

Easy

Fraud detection model
Logistic Regression
2 mins
Data Science
Solve

Medium

Rox's decision tree classifier
Decision Tree Classifier
2 mins
Data Science
Solve

Hard

n-gram generator
2 mins
Machine Learning
Solve

Medium

Green or red balls
2 mins
Probability
Solve

Hard

Square points and Circle
3 mins
Probability
Solve

Easy

Frequency distribution
3 mins
Statistics
Solve
🧐 Question🔧 Skill💪 Difficulty⌛ Time
Amazon electronics product feedback
Data Science
Medium2 mins
Solve
Fraud detection model
Logistic Regression
Data Science
Easy2 mins
Solve
Rox's decision tree classifier
Decision Tree Classifier
Data Science
Medium2 mins
Solve
n-gram generator
Machine Learning
Hard2 mins
Solve
Green or red balls
Probability
Medium2 mins
Solve
Square points and Circle
Probability
Hard3 mins
Solve
Frequency distribution
Statistics
Easy3 mins
Solve
Reason #4

1200+ customers in 75 countries

Brandon

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!


Brandon Lee, Head of People, Love, Bonito

Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Data Science Assessment Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Data Science Assessment Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & comparative results

Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring


What roles can I use the Data Science Assessment Test for?

  • Data Scientist
  • Data Science Engineer
  • Data Analyst
  • Machine Learning Engineer
  • Statistician

What topics are covered in the Data Science Assessment Test?

监督学习
无监督的学习
混淆矩阵
梯度下降
统计数据
精确
分类
协作过滤
记起
功能选择
可能性
协作过滤
K-Nearest邻居(K-NN)
机器学习
天真的贝叶斯
数据挖掘
特征值
分类和回归树(购物车)
推荐系统
p值
数据可视化
神经网络
numpy
线性回归
指数分散
决策树
熊猫
决策边界
正态分布
曲线拟合
二项分布
Scipy
Baye的定理
泊松分布
Scikit学习
Cauchy分布
多重共线性
异常值
降低方法
多元分析
线性代数
Singapore government logo

The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.


85%
reduction in screening time

FAQs

数据科学在线测试包含什么类型的问题?

数据科学测试通过基于方案的问题评估了候选人的在职技能水平,重点是候选人的能力:

  • 清洁数据并寻找异常
  • 使用火车/测试数据和k折交叉验证来构建强大的模型
  • 使用线性回归,多项式回归和多元回归进行预测
  • 使用K-均值聚类,支持向量机(SVM),KNN,决策树,天真贝叶斯和PCA对数据​​进行分类
  • 阅读混乱矩阵
  • 了解偏见/差异权衡和过度拟合
  • 使用向后消除,前向选择和双向消除方法创建统计模型
  • 转换自变量并得出用于建模目的的新自变量
  • 检查多重共线性
  • 了解并防止模型恶化

如何为高级数据科学家定制测试?

除上述主题外,对高级数据科学家的测试还包括有关高级主题的问题:

  • 高级数据操作以生成来自大型,非结构化数据集的见解
  • 功能工程
  • 高参数调整
  • 加强学习
  • 减少维度
  • 高级统计分析

数据科学测试是否评估数据科学才能或特定技术?

该测试的现成版本侧重于数据科学能力 - 概率,统计和机器学习。如果您想测试特定技术,则可以请求此测试的自定义版本。

我可以将多个技能结合在一起,为一个自定义评估吗?

是的,一点没错。自定义评估是根据您的职位描述进行的,并将包括有关您指定的所有必备技能的问题。

您是否有任何反交换或策略功能?

我们具有以下反交易功能:

  • 不可解决的问题
  • IP策略
  • Web Protoring
  • 网络摄像头Proctoring
  • 窃检测
  • 安全浏览器

阅读有关[Proctoring功能](https://www.adaface.com/proctoring)的更多信息。

如何解释考试成绩?

要记住的主要问题是评估是消除工具,而不是选择工具。优化了技能评估,以帮助您消除在技术上没有资格担任该角色的候选人,它没有进行优化以帮助您找到该角色的最佳候选人。因此,使用评估的理想方法是确定阈值分数(通常为55%,我们为您提供基准测试),并邀请所有在下一轮面试中得分高于门槛的候选人。

我可以使用该测试的经验水平?

每个ADAFACE评估都是为您的职位描述/理想候选角色定制的(我们的主题专家将从我们的10000多个问题的图书馆中选择正确的问题)。可以为任何经验级别定制此评估。

每个候选人都会得到同样的问题吗?

是的,这使您比较候选人变得容易得多。 MCQ问题的选项和问题顺序是随机的。我们有[抗欺骗/策略](https://www.adaface.com/proctoring)功能。在我们的企业计划中,我们还可以选择使用类似难度级别的问题创建多个版本的相同评估。

我是候选人。我可以尝试练习测试吗?

不,不幸的是,我们目前不支持实践测试。但是,您可以使用我们的[示例问题](https://www.adaface.com/questions)进行练习。

使用此测试的成本是多少?

您可以查看我们的[定价计划](https://www.adaface.com/pricing/)。

我可以免费试用吗?

我刚刚搬到了一个付费计划。我如何要求自定义评估?

Join 1200+ companies in 75+ countries.
Try the most candidate friendly skills assessment tool today.
Ready to use the Adaface Data Science Assessment Test?
Ready to use the Adaface Data Science Assessment Test?
Chat with us
40 min tests.
No trick questions.
Accurate shortlisting.
Terms Privacy Trust Guide

🌎 Pick your language

English Norsk Dansk Deutsche Nederlands Svenska Français Español Chinese (简体中文) Italiano Japanese (日本語) Polskie Português Russian (русский)
Ada
Ada
● Online
Previous
Score: NA
Next
✖️