# Statistics

This page is about the skill Statistics, which is one of more than 40 technical skills you can assess on Alooba. The Statistics skill is about the core probability, time series and statistics concepts that underlie Machine Learning algorithms and Data Science in general. Participants should be able to answer core probability and statistics questions, hypothesis testing, AB-testing, statistical significance of results and how a business can benefit from becoming driven by these concepts. Moreover the candidate should be able to cover time series concepts like decomposition, heteroscedasticity, stationarity, trend and seasonality, auto-correlation and more. Participants will need to thoroughly understand the absolute basics like measures of central tendency, measures of dispersion, measures of error, goodness of fit stats and core concepts like correlation vs causation, outlier detection etc.

### What types of things are included in the Statistics skill?

The Statistics skill assesses knowledge of topics like A/B testing, Autocorrelation, Bayes Thereom, Central Limit Theorem, Collinearity, Conditional Probability, Correlation, Distance Metrics, Distributions, Elasticity, Gradients, Heteroskedasticity, Hypothesis Testing, Logistic Regression, Outliers, Probability, Samples, T-Tests etc.

### Which types of roles require good Statistics skills?

Statistics is a commonly assessed skill for roles such as Data Analysts, Data Scientists, Product Analysts & Marketing Analysts.

### Why should we test someone’s Statistics skills?

A critical part of running an ethical hiring process that’s fair and meritocratic is having objective measures of someone’s skills. Why does ethical hiring matter? Simple - it helps you hire the best person for the job.

Robert Half reported that the cost of a bad hire is on average 15-21% of the employee’s salary.

What was the most common reason for mis-hires? A lack of the right technical skills. This a true hiring own-goal, as it’s so easily preventable through a valid, thorough skills assessment.

So, if your role requires a candidate to know Statistics well, you can validate that with Alooba Assess.

### Can I test my current team’s Statistics skills too?

Yes you sure can. You can assess their skills using Alooba Growth.

### Which tests can I find the Statistics skill in?

Statistics can be assessed through the Concepts & Knowledge test & Free Response test. The Free Response Test includes different answer options like written responses, video answers and diagram answers.

### Can I add my own Statistics questions?

Yes, you can add your own Statistics questions via the question bank.

### How do I get access to Alooba to test Statistics skills?

Feel free to reach out and book a quick discovery call here.

### How difficult is the Statistics skill?

Each question on Alooba is categorized by difficulty - Easy, Medium & Hard. You can set the difficulty level to whatever you like by picking and choosing the questions that you want to include.

### What else can I assess with Alooba?

You can also assess someone’s intelligence, their personality type and critical soft skills, like communication.

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