Tech Notes

My notes on Statistics, Big Data, Cloud Computing, Cyber Security

Tag Archives: response variable

Data Collection – Experiments

We are concerned with the analysis of data generated from an experiment. It is wise to take time and effort to organise the experiment properly to ensure that the right type of data, and enough of it, is available to answer the questions of interest as clearly and efficiently as possible. The specific questions that the experiment is intended to answer must be clearly identified before carrying out the experiment. We should also attempt to identify known or expected sources of variability in the experimental units since one of the main aims of a designed experiment is to reduce the effect of these sources of variability on the answers to questions of interest. That is, we design the experiment in order to improve the precision of our answers


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Data Collection – Observational Studies

Observational Studies

In observational studies, as the name implies, the data are measurements of existing characteristics of a group or groups of individuals. The goal is typically to make conclusions about a population based on the sample of individuals we’ve observed, or to compare a measurement on individuals between different groups. Read more of this post