Bar Chart: A graph that uses rectangular bars, which can be plotted vertically or horizontally to show values for the items you are measuring. It allows people to compare values among the categories or groups of categories in a dataset.

Body Mass Index (BMI): A measure of body fat calculated from a person’s weight and height. People with a BMI above 30 are categorized as obese, and are at a higher risk of developing health problems.

Cardiovascular Disease: Refers to a class of diseases that involve the heart or blood vessels, including heard disease, stroke, and others.

Community Types: A system of community types was created by the Metropolitan Area Planning Council in order to facilitate the MetroFuture regional plan. While each city and town is unique, communities within each type share important characteristics that will influence their development over the coming decades. The criteria used to define Community Types include land use and housing patterns, recent growth trends, and projected development patterns. See the MetroFuture website for more information about the community types. (

Histogram: Shows the distribution of data in a bar chart format. It graphs groups of numbers depending on their frequency or how often they appear. It shows the shape of the data set’s distribution. The groups are plotted along an X-axis and the frequency (number of records) of those groups along the Y-axis.

Hypertension: A term used to describe high blood pressure. High blood pressure increases the chance of having a stroke, heart attack, heart failure, kidney disease, and early death. It has many causes, and treatments can include diet, exercise, lifestyle changes, and medical treatments.

Line Graph: Used to show change over time. It is similar to a scatterplot because each point is connected to two variables, shown through the positions along the X- and Y -axis. However, in a line graph, typically the x-axis represents time intervals such as months or years.

Linguistic Isolation: A term used by the Census Bureau to refer to households in which no member 14 years old and over speaks only English or speaks a non-English language and speaks English “very well.” In other words, all members of the household 14 years old and over have at least some difficult with English. Members of linguistically isolated households may have difficulty obtaining medical care or government services.

Map: A representation of a geographic area highlighting spatial data such as physical boundaries, location points, natural terrain, etc. By linking geographic places such as census tracts, cities or counties with a quantitative data set, you can use color on your map to signify numeric values as well.

Margin of Error: A measure of uncertainty associated with sample surveys. Data obtained from surveys on this website also include a margin of error. It can be interpreted to mean that if the survey was repeated 100 times, 95 would fall within the range reported as the “margin of error.”

Pie Chart: A circular visualization divided into segments. Each segment represents a piece of the whole, illustrating proportionate values.

Safe Routes to School (SRTS): Safe Routes to School refers to a variety programs which seek to make walking and bicycling to school a safe and routine activity for school children.

Scatterplot: Allows people to observe relationships, patterns, or correlations among sets of variables. It is a collection of points along an XY coordinate system. The position of each point is dependent on the value of the variables along the horizontal or X-axis and the value of the other variable along the vertical or Y-axis. Typically, a scatterplot is used to display two variables for one set of data, but Weave allows users to show up to four variables through not only values along the X- and Y- axes, but also but the size and color of the point plotted.

The Supplemental Nutrition Assistance Program (SNAP): This is a federal program that provides assistance to eligible low-income families for obtaining nutritious food. Many recipients use an Electronic Benefits Transfer (EBT) card to pay for purchases in supermarkets, and increasingly farmer’s markets.

Web-based Analysis and Visualization Environment (WEAVE): The open-source software this website uses to create data visualizations, which include tables, scatterplots, bar charts, maps, and more. Learn more about it at