bar graph	A graph that uses horizontal or vertical bars to represent data.
categorical data	Data that details non-numerical features of an object. Examples of categorical data include eye color, blood type, and types of computers.
data	Mathematical term for information such as values or measurements.
histogram	A graph using bars to show continuous quantitative data over a series of similar-sized intervals. The height of the bar shows the frequency of the data, and the width of the bar represents the interval for the data.
pictograph	A graph that uses small icons or pictures to represent data.
quantitative data	Numerical data. Examples of quantitative data include height, weight, and test scores.
x-axis	The horizontal axis of a coordinate plane. Also the horizontal axis of a bar graph or histogram.
y-axis	The vertical axis of a coordinate plane. Also the vertical axis of a bar graph or histogram.