In this video, we will be learning about density curves. First, we need to review histograms. A histogram is a graph showing the frequency distribution of a set of continuous data. We can convert a frequency distribution into a relative frequency distribution, which shows the proportion or percentage of data values within a given interval. To make a relative frequency distribution, we need to know the total number of individuals and divide the number of people in each interval by the total amount of people. A density curve is a curve that helps us visualise the overall shape of a distribution. It is created by drawing a curve around the histogram. Density curves have several advantages over histograms, such as giving an idealised picture of a population or dataset, not being limited by the number of intervals, and being easier to work with especially when working with very large populations.
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