# Ten Common Graphs and Data Tables on Numeracy Tests

All the numeracy tests you’re likely to come across ask you to deal with information in graphs and tables and to be able to work out basic statistics such as averages and the range.

Graphs and tables are useful topics in everyday life – if you pick up a newspaper or watch the news, you’re almost certain to see a graph somewhere; you might also read price information from a table and have to figure out when to catch your bus or train.

1 ## Bar chartsA bar chart looks a bit like the skyline of a city with lots of skyscrapers. (They can also be sideways-on, so they look like a picture of a skyline with skyscrapers going sideways.) Each of the skyscrapers (bars) represents a group or a category – say, the number of people with green eyes or the percentage of late trains in a particular month. |
2 ## Multiple bar chartsA variation on the simple bar chart is the The idea of a multiple bar chart is to compare similar information in two different scenarios – a school’s inspection rankings in two different years, the distribution of ages of the populations of two different cities or the difference between students’ mock and actual exam scores. |
3 ## Pie chartsA The three things you may have to do with a pie chart in a numeracy test are to convert between the angle and the size of each group, percentages and the size of each group, and the angles and percentages. |

4 ## Line graphsA Reading a line graph is simple and (hopefully) fairly obvious. You’re normally given one value (say, the time) and have to find the other (say, the temperature). |
5 ## Multiple line graphsYou may be given a graph with several different lines on it. Multiple line graphs can be confusing, even for the pros, but they’re not too bad if you can keep your head. All you have to do is make sure you’re looking at the correct line – the graph will have a key beside it telling you which graph is which. |
6 ## Scatter graphsA |

7 ## Box plotsBox plots are part of the teacher training numeracy tests, but not any of the other numeracy tests. A You may see box plots going from left to right or from bottom to top (see Figure 8-7 for an example of each); in either case, they work the same way: you have a |
8 ## Cumulative frequency graphsCumulative frequency graphs are part of the teacher training numeracy tests, but not any of the other numeracy tests. The word |
9 ## Two-way tablesThe idea of a two-way table is to show the numbers of observations split across two separate categories and (importantly) the totals of each. You can see that the bottom number in each column (in the row marked ‘total’) is the sum of the numbers above it, and the last number in each row (in the column marked ‘total’) is the sum of the numbers to its left. |

10 ## Tally chartsA You don’t need to know how to make a tally chart for a numeracy test, but you do need to be able to read it. |