Sometimes you are given a function on a graph and asked to find the domain and range of that function. But what are the domain and the […]More…
Category: Graphs
Box Plots
Box plots are used to represent the 5 data items listed below graphically, which are: Lowest value in the dataset Lower Quartile (LQ) Median Upper Quartile (UQ) […]More…
Best Fit on a Scatter Diagram
When drawing a ‘best fit’ line on a scatter diagram, you need to keep in mind a few points as these will determine whether you best fit […]More…
Estimate the Area under a Curve
When estimating the area under a curve, you need to split the area under the curve into a number of distinct shapes; the total area of those […]More…
Frequency Polygons
A frequency polygon is a line graph that is based on a frequency table. Frequency polygons are similar to histograms. Here is an example below.
Cumulative Frequency Diagram
The next step after completing your Cumulative Frequency table is to draw a Cumulative Frequency Diagram; and the question that is most likely to come up is […]More…
Scatter Diagrams
A scatter diagram is a way of visually representing information on two variables on a graph. You can get 3 possible outcomes with scatter diagrams, these are: […]More…
Direct & Inverse Proportions
Sometimes you are told that 2 quantities (or values) are directly proportional (or inversely proportional) to one another. This means that there is a relationship between the […]More…