A bar graph is a visual representation of data using bars of different heights or lengths to show the quantity of each category.

To survey a group means to ask questions to gather information or opinions from that group.

To find the difference, subtract the smaller number from the larger number.

A line plot is used to display data along a number line, showing how often each value occurs.

The mode is the number that appears most frequently in a data set.

A tally chart is a way to record and count data using marks (tallies) to represent each count.

To compare data means to look at two or more sets of information to see how they are similar or different.