Statistics Test

Q: What topics are covered in the Statistics Test?

统计基础 推论：P值和置信区间 数据采样 居民 采样分布 探索性数据分析 非参数统计 可能性 数据分析

About the test:

统计在线测试评估了候选人在统计概念和分析方面的理解和熟练程度。它涵盖了统计方法，数据分析，数值推理和定量才能等主题。

Covered skills:

统计基础
数据采样
采样分布
非参数统计
数据分析

推论：P值和置信区间
居民
探索性数据分析
可能性

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9 reasons why

Adaface Statistics Assessment Test is the most accurate way to shortlist 统计员s

Reason #1

Tests for on-the-job skills

The Statistics Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

了解基本概念和统计原理
应用统计技术来分析数据并得出结论
解释P值和置信区间以进行推断
抽样数据并了解采样分布
使用回归分析来分析变量之间的关系
进行探索性数据分析以了解模式和趋势
应用非参数统计数据进行数据分析
了解概率理论及其应用
使用各种数据分析技术分析数据

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.

View sample questions

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

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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.

How we design questions

这些只是我们库中有10,000多个问题的一个小样本。关于此的实际问题统计测试将是不可行的.

🧐 Question
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
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
Medium Hiring Developer Skewed Data Graph	Solve
Two companies A and B hired developers from the year 2001 to 2005. The given bar graph shows the hiring details. Now select the statements that are true based on the given details. A: The data given for Company A is skewed to the left. B: The data given for Company B is skewed to the right. C: The data given for Company A is skewed to the right. D: For Company B, mean and mode are equal. E: For Company B, mean is equal to median but less than mode. F: For Company A, median is less than mode but greater than mean.
Medium Negative correlation	Solve
Saffi, one of the popular schools in San Francisco did a school wide study of the students in middle school. The study found that there is a negative correlation between the time spent on Facebook per day by students and their academic achievement. How can we understand the results of this study? A: An increase in time spent on Facebook per day causes a drop in the academic achievement of students at the middle school level. B: There is an association between an increase in time spent on Facebook per day and the drop in the academic achievement of students at Saffi. C: An increase in the time spent on Facebook per day causes a drop in the academic achievement of students at Saffi. D: There is an association between an increase in time spent on Facebook per day and the drop in the academic achievement of students at the middle school level.

	🧐 Question	🔧 Skill
	Easy Frequency distribution	3 mins Statistics	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
	Medium Green or red balls	2 mins Probability	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	3 mins Probability	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
	Medium Hiring Developer Skewed Data Graph	3 mins Data Analysis	Solve
Two companies A and B hired developers from the year 2001 to 2005. The given bar graph shows the hiring details. Now select the statements that are true based on the given details. A: The data given for Company A is skewed to the left. B: The data given for Company B is skewed to the right. C: The data given for Company A is skewed to the right. D: For Company B, mean and mode are equal. E: For Company B, mean is equal to median but less than mode. F: For Company A, median is less than mode but greater than mean.
	Medium Negative correlation	2 mins Data Analysis	Solve
Saffi, one of the popular schools in San Francisco did a school wide study of the students in middle school. The study found that there is a negative correlation between the time spent on Facebook per day by students and their academic achievement. How can we understand the results of this study? A: An increase in time spent on Facebook per day causes a drop in the academic achievement of students at the middle school level. B: There is an association between an increase in time spent on Facebook per day and the drop in the academic achievement of students at Saffi. C: An increase in the time spent on Facebook per day causes a drop in the academic achievement of students at Saffi. D: There is an association between an increase in time spent on Facebook per day and the drop in the academic achievement of students at the middle school level.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Frequency distribution	Statistics	Easy	3 mins	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
	Green or red balls	Probability	Medium	2 mins	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?
	Square points and Circle	Probability	Hard	3 mins	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
	Hiring Developer Skewed Data Graph	Data Analysis	Medium	3 mins	Solve
Two companies A and B hired developers from the year 2001 to 2005. The given bar graph shows the hiring details. Now select the statements that are true based on the given details. A: The data given for Company A is skewed to the left. B: The data given for Company B is skewed to the right. C: The data given for Company A is skewed to the right. D: For Company B, mean and mode are equal. E: For Company B, mean is equal to median but less than mode. F: For Company A, median is less than mode but greater than mean.
	Negative correlation	Data Analysis	Medium	2 mins	Solve
Saffi, one of the popular schools in San Francisco did a school wide study of the students in middle school. The study found that there is a negative correlation between the time spent on Facebook per day by students and their academic achievement. How can we understand the results of this study? A: An increase in time spent on Facebook per day causes a drop in the academic achievement of students at the middle school level. B: There is an association between an increase in time spent on Facebook per day and the drop in the academic achievement of students at Saffi. C: An increase in the time spent on Facebook per day causes a drop in the academic achievement of students at Saffi. D: There is an association between an increase in time spent on Facebook per day and the drop in the academic achievement of students at the middle school level.

Reason #4

1200+ customers in 75 countries

借助 Adaface，我们能够将初步筛选流程优化达 75% 以上，为招聘经理和我们的人才招聘团队节省了宝贵的时间！

Brandon Lee, 人事主管, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment 统计测试 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.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the 统计测试 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 & benchmarks

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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

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About the Statistics Online Test

Why you should use Pre-employment Statistics Test?

The 统计测试 makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

了解统计基础知识
能够应用推理技术，例如P值和置信区间
数据采样方法的知识
熟练回归分析
理解抽样分布
有能力执行探索性数据分析
知识非参数统计
概率计算技巧
熟练数据分析
具有统计软件包的经验

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Statistics Test?

推断：p值和置信区间
推论：p值和p值和置信区间的重点是统计推断，这涉及根据样本数据得出有关人群的结论或预测。在测试中测量了该技能，以评估候选人执行假设检验的能力并确定统计结果的显着性或置信度。
数据采样
数据采样是指从较大人群中选择一部分观测值进行统计分析。在测试中测量了该技能，以评估候选人对不同采样技术的了解，对抽样偏差的理解以及有效收集代表性数据的能力。
回归
回归分析是一种统计用于建模和分析变量之间的关系的技术。在测试中测量了该技能，以评估候选人在拟合回归模型，解释系数和基于模型的预测中的熟练程度。
采样分布
采样分布涉及理论分布从同一人群的不同样本中计算出的统计数据。在测试中测量了该技能，以评估候选人对采样分布的理解，包括中心限制定理和标准误差的概念。
探索性数据分析
探索性数据分析（EDA（EDA））涉及总结，可视化和解释数据以获得见解并识别模式或趋势的过程。在测试中测量了该技能，以评估候选人执行数据探索技术的能力，例如绘制图，计算摘要统计数据以及检测异常值或缺失值。
非参数统计</h4> </h4> < P>非参数统计是统计方法，对基本人口分布没有任何假设。该技能在测试中测量以评估候选人对非参数测试的知识和应用，例如Mann-Whitney U测试或Wilcoxon签名的秩检验，当处理不符合正常性假设的数据时。</p> <</p> <</p> <</p> < H4>概率
概率是指事件发生的可能性的度量，这是根据有利结果与总可能结果的比率。在测试中测量了该技能，以评估候选人对概率理论的理解，包括条件概率，独立事件和概率分布。
数据分析
数据分析包括检查检查过程，清洁，转换和建模数据以发现有用的见解并支持决策。在测试中测量了该技能，以评估候选人在应用统计技术方面的熟练程度，并将结果解释为实用数据驱动的问题解决。
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for 统计测试 to be based on.
描述性统计
中心趋势的度量
分散措施
相关分析
假设检验
置信区间
参数测试
非参数测试
采样技术
简单的线性回归
多重回归
方差分析（方差分析）
卡方测试
时间序列分析
探索性数据分析技术
异常值检测
数据可视化
概率分布
有条件的概率
随机变量
贝叶斯统计
统计推断
统计建模
数据挖掘技术
统计软件
数据解释
统计报告
定量方法
统计学意义
数据验证

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What roles can I use the Statistics Test for?

统计员
数据分析师
数据科学家
定量分析师
业务分析师
金融分析师
图形设计师
认知科学家

How is the Statistics Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like