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Admin | Jan 07, 2022
Data science is a multidisciplinary subject where raw data is mined to draw insights and make strategic decisions. Currently, there are ample job opportunities for students pursuing an online MBA in data science. Such skilled individuals are becoming rock stars of global organisations. As per IBM, demand for data scientists will rise by 28 percent by 2020 and more so in the coming future. You can leap on this successful train by enrolling in a data science MBA online. It will help you get a deep understanding of the subject and aid you in getting a job in a global organisation.
Suppose you are an up-and-coming data science professional pursuing an MBA in data science online. In that case, you should be well versed with the basic and advanced data science concepts to impress prospective employers. Employers are looking for data science professionals who are smart, confident, technically sound, and a great fit for them. And to help you with that, we have combined top interview questions that data science graduates should know before appearing for a job interview.
What does the term data science mean?
Data science is a field that uses scientific and statistical methods, tools, systems, and algorithms to extract insights from structured and unstructured raw data. It is used for strategic decision-making with the help of available data and facts.
What are the qualities of a good data scientist in an organisation?
Data scientists should be innovative, enjoy drawing insights from raw data, be well-versed with tools and techniques, be solution-oriented, inquisitive, have an analytical mind, enjoy automating routine tasks, be creative, and solve complex issues, and be good team workers.
Explain some of the sampling techniques?
Data scientists use data sampling techniques to analyse large data sets. In the case of large datasets, it becomes important to gather data samples that represent the whole population. Data sampling can be categorised into the following broad categories:
When is resampling performed?
Resampling means when a data sample is collected again to perform analysis. Resampling is performed in the following cases:
Define feature vectors
Feature vector contains multiple elements of an object. To put it in simple language, it is a numerical list that forms and represents a picture.
What are the drawbacks of the linear model?
Some drawbacks of the linear model are-
Define selection bias
Selection bias means bias due to the selection of data, samples, people, and groups so that it does not represent the qualities of the whole population. As a result, the randomness of data is compromised.
What are different kinds of sampling biases?
A few different types of biases in sampling are-
What is the difference between data science and data analytics?
The two subjects- data science and data analytics are interrelated.
What do you mean when p values are lower and when p values are higher?
A p-value is the probability of results being equal to or higher than the results of a specific hypothesis, and it assumes that the null hypothesis is correct.
What is a decision tree?
A decision tree is a popular statistical model. It looks like a flowchart where each node represents a test or an outcome of an attribute. It is a tree-like structure that outlines all the possible decisions and prospective outcomes. It is used extensively in many real-life projects across engineering, law, civil planning, business, etc.
Define six sigma.
Six sigma is a process where 99.99966 percent of results are free of defects. It is a tool for organisations to improve their existing business process. It helps boost employee morale, reduce defects, and improve the quality of goods and services.
In addition to these technical questions, you should also be ready for a few personality tests and HR questions. You should understand the mission and vision of the organisations and should be able to justify why you would be a good fit for them. You should also prepare a few common questions like future goals, strengths, weaknesses, hobbies, and work ethics. You should also research the organisation you are interviewing for and understand what they are looking for. Getting an online MBA in data science will equip you to answer all the above questions and many more during an interview.
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