At level one we saw that a sample represents a small number of units taken from a larger population and that the larger the sample, the better it reflects the population. The term 'sample size' refers to the number of measurements in the sample. Now we will practice making some simple calculations based on sample size.
Sample size is always notated in statistics using the letter n. If you are aware of this fact and happy using n in calculations, you can skip this page and move on.
ApplicationAgain, as preparation for later levels and to practice using the calculator, perform the following sums involving n. You have 20 data points in your data.Calculator