Course: Introduction to Data Science for Business

In Excel, you can use formulas to populate the value of a cell. Formulas can be used to perform numeric calculations, such as: adding or multiplying altering text (e.g. removing …

A measure of central tendency is a single value that represents the centre of a data distribution. To determine the centre or central tendency of the data, we can calculate …

Data analytics involves processing and performing statistical analysis of existing data sets. Data analytics can be of four types depending on the type and scope of analysis being conducted on …

In this video, you were introduced to descriptive statistics. As we learned earlier, descriptive statistics describe data to help the audience construct a mental picture of it. To do this, …

After learning how to describe a data set, the next step for data scientists is to start exploring the data to identify the possible interactions amongst the variables. The video …

The video covered three crucial concepts about hypothesis testing. These include: Why should we perform hypothesis testing? What is hypothesis testing? What are null and alternative hypotheses? It is important …

After watching the video, you can recognise the five steps to testing a hypothesis. Testing a hypothesis requires data scientists to perform statistical analysis tests on the actual data set. …

Data scientists are often the go-to people in an organisation to get a sense check on the organisation’s performance metrics. Therefore, they have a responsibility to portray the figures accurately. …

A structured-thinking framework is a set of steps or stages that a data scientist can use to resolve a business problem in an evidence-based scientific manner. The three fundamental steps …

’A hypothesis may be simply defined as a guess. A scientific hypothesis is an intelligent guess.’ – Isaac Asimov [1] ‘Hypothesis’ originates from the Greek words ‘hupo’ (under) and ‘thesis’ …

Excel offers a variety of tools to create effective and engaging data visualisations. In this video, you learned how to create different types of charts in Excel. Next, let’s engage …

While it may seem like the fields of data and ethics might not have much in common, in reality, they do. Despite tough regulations, data security and privacy breaches have …

Data visualisation is the process of communicating information through charts, diagrams, dashboards, schematics, and graphics in a human-readable format. The video above explored some key examples and comparisons that demonstrate …

As the Cambridge Dictionary defines it, data is facts and statistics collected for reference, examination, or analysis that is used to help decision-making. [1] For example, at a manufacturing unit, …

When your business project involves handling big data, it is essential to have a workflow or a life cycle finalised at the beginning. There are certain advantages to locking in …