STA258 Lecture 03
Pre-Lecture
2. Descriptive Statistics.pdf
STA258 Pre-Lecture 03 Summary
Lecture
- Normal Distribution
- Gaussian Function
- The above shows how we get from the Gaussian Function to a Normal Distribution and Standard Normal Distribution.
- Standard Normal Distribution
- Ex:
- Time taken for an employee in a company to do a task is Normal Distribution with
and - What is the probability that it takes more than
minutes - What is the probability this employee takes between
- Time taken for an employee in a company to do a task is Normal Distribution with
- Normal Q-Q Plot
- Messing with R

- Ex:
- Covid 19, day 1, patient 0 is an outlier.
- If you ignore it, then you have an outbreak, if you look at it, then you'll see what it is.
- Analyse the outliers properly.

- You can see that it might not be an outlier, when we separate by species, different species have different data. We only have on outlier in this case instead of ~5.