Big Data: Everything You Need to Know When Assessing Big Data Skills

Big Data

Big data is a term used to describe datasets that are so large and complex that traditional data processing applications are inadequate. Big data challenges include capturing, storing, searching, sharing, analyzing, and visualizing these datasets.

Big data can be characterized by the following 5 Vs:

Volume: Big data datasets are typically very large, often in the petabytes or exabytes range.
Velocity: Big data datasets are often generated in real time or near real time, requiring high-throughput processing.
Variety: Big data datasets can come in a wide variety of formats, including structured, semi-structured, and unstructured data.
Veracity: Big data datasets can be noisy and incomplete, requiring careful cleaning and preparation before analysis.
Value: Big data can be used to extract valuable insights that can help organizations improve their decision-making and operations.

Big data is used in a wide variety of industries, including healthcare, finance, retail, and manufacturing. Some common examples of big data applications include:

Fraud detection: Financial institutions use big data to detect fraudulent transactions and protect their customers from fraud.
Customer segmentation: Retailers use big data to segment their customers and target them with personalized marketing campaigns.
Product development: Manufacturers use big data to develop new products and improve existing products.
Medical research: Healthcare researchers use big data to identify new disease treatments and improve patient care.

Big data is a powerful tool that can be used to improve businesses and organizations in many ways. However, it is important to have the right tools and expertise to manage and analyze big data effectively.

Discover How To Get Started Assessing Big Data Skills

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This was a very interesting round and definitely tests our business acumen. Would be excited to see what's ahead.

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Data analytics candidate for large enterprise

A great experience overall, smooth platform, easy to use, challenging questions and very relevant to the role.

Yoel

Senior marketing analyst for travel multinational

Overall, I found the test platform to be very user-friendly and well-designed. It provided a smooth and efficient experience throughout the assessment.

Rahul

Marketing candidate at global travel enterprise

The website itself was amazing, and I liked it more than any LinkedIn or other assessment I took before. It shows how seriously you are taking this and made me enter the test mode without being stressed.

Majed

Marketing analyst candidate at Asian travel giant

Our Customers Say

I was at WooliesX (Woolworths) and we used Alooba and it was a highly positive experience. We had a large number of candidates. At WooliesX, previously we were quite dependent on the designed test from the team leads. That was quite a manual process. We realised it would take too much time from us. The time saving is great. Even spending 15 minutes per candidate with a manual test would be huge - hours per week, but with Alooba we just see the numbers immediately.

Shen Liu, Logickube (Principal at Logickube)

We get a high flow of applicants, which leads to potentially longer lead times, causing delays in the pipelines which can lead to missing out on good candidates. Alooba supports both speed and quality. The speed to return to candidates gives us a competitive advantage. Alooba provides a higher level of confidence in the people coming through the pipeline with less time spent interviewing unqualified candidates.

Scott Crowe, Canva (Lead Recruiter - Data)

How can you accurately assess somebody's technical skills, like the same way across the board, right? We had devised a Tableau-based assessment. So it wasn't like a past/fail. It was kind of like, hey, what do they send us? Did they understand the data or the values that they're showing accurate? Where we'd say, hey, here's the credentials to access the data set. And it just wasn't really a scalable way to assess technical - just administering it, all of it was manual, but the whole process sucked!

Cole Brickley, Avicado (Director Data Science & Business Intelligence)

I wouldn't dream of hiring somebody in a technical role without doing that technical assessment because the number of times where I've had candidates either on paper on the CV, say, I'm a SQL expert or in an interview, saying, I'm brilliant at Excel, I'm brilliant at this. And you actually put them in front of a computer, say, do this task. And some people really struggle. So you have to have that technical assessment.

Mike Yates, The British Psychological Society (Head of Data & Analytics)

I was at WooliesX (Woolworths) and we used Alooba and it was a highly positive experience. We had a large number of candidates. At WooliesX, previously we were quite dependent on the designed test from the team leads. That was quite a manual process. We realised it would take too much time from us. The time saving is great. Even spending 15 minutes per candidate with a manual test would be huge - hours per week, but with Alooba we just see the numbers immediately.

Shen Liu, Logickube (Principal at Logickube)

We get a high flow of applicants, which leads to potentially longer lead times, causing delays in the pipelines which can lead to missing out on good candidates. Alooba supports both speed and quality. The speed to return to candidates gives us a competitive advantage. Alooba provides a higher level of confidence in the people coming through the pipeline with less time spent interviewing unqualified candidates.

Scott Crowe, Canva (Lead Recruiter - Data)

How can you accurately assess somebody's technical skills, like the same way across the board, right? We had devised a Tableau-based assessment. So it wasn't like a past/fail. It was kind of like, hey, what do they send us? Did they understand the data or the values that they're showing accurate? Where we'd say, hey, here's the credentials to access the data set. And it just wasn't really a scalable way to assess technical - just administering it, all of it was manual, but the whole process sucked!

Cole Brickley, Avicado (Director Data Science & Business Intelligence)

I wouldn't dream of hiring somebody in a technical role without doing that technical assessment because the number of times where I've had candidates either on paper on the CV, say, I'm a SQL expert or in an interview, saying, I'm brilliant at Excel, I'm brilliant at this. And you actually put them in front of a computer, say, do this task. And some people really struggle. So you have to have that technical assessment.

Mike Yates, The British Psychological Society (Head of Data & Analytics)

I was at WooliesX (Woolworths) and we used Alooba and it was a highly positive experience. We had a large number of candidates. At WooliesX, previously we were quite dependent on the designed test from the team leads. That was quite a manual process. We realised it would take too much time from us. The time saving is great. Even spending 15 minutes per candidate with a manual test would be huge - hours per week, but with Alooba we just see the numbers immediately.

Shen Liu, Logickube (Principal at Logickube)