Scatter plots are similar to ordered pairs on coordinate grids, You still plot points on the plot, but they do not follow a particular pattern. Instead, you will notice a general relationship between the input and output: positive (both input and output appear to be increasing); negative (as input increases, output decreases); or no relationship (there is no general relationship between the input and output);.
Positive Correlation
Negative Correlation
No Correlation
Frequency Tables
Frequency tables keep track of the frequency (or how often something occurs). It will include the different categories the title suggests and the frequency, and possibly tally marks.
Bar Graphs
Bar graphs show frequency of information in horizontal or vertical bars. A frequency table can be converted into a bar graph, and scales may vary to accommodate large numbers.
Dot Plots
Dot plots show frequency of data using dots or other symbols, typically in the form of a number line. The symbols that represent the data may represent more than one piece of data if the key says otherwise (ex: one dot = three votes). A frequency table can be converted into a dot plot.
Stem-and-Leaf Plots
Stem-and-leaf plots show data according to place value. The stems are the larger place values (ex: whole numbers, or tenths) and the leaves are the smallest place value (ex: tenths, or hundredths). A frequency table might also be converted into a stem-and-leaf plot.
Analyzing Graphs
Aside from making graphs from frequency tables or other graphs, you will need to be able to analyze them. You might need to answer questions such as:
Which piece of data occurs most often?
How much larger is one piece of data than another?
How many people voted?
How many more people voted for items A and B rather than C and D?