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12 September 2025

This week

Understanding and describing data

  • Quantitative research is the process of collecting and analysing numerical data to describe, model, and predict variables of interest.

  • Garbage in, garbage out.

Learning Objectives

By the end of this lecture you should:

  1. Understand basic data types;
  2. Consider how to summarise and represent data.

Overview

We’ve covered:

  • Data types: levels of measurements; quantitative & qualitative
  • Key metrics
  • Null values and outliers
  • Visualising data

Practical

Practical will focus on setting up Python environment and describing a dataset.

  • Have questions prepared!