You can click on Section 2.1 to access the online version of this section of the textbook. Below you can find the modified version of section 2.1.
Bar graphs consist of bars that are separated from each other. The bars can be rectangles or they can be rectangular boxes (used in three-dimensional plots), and they can be vertical or horizontal. The bar graph shown in Example 2.5 has age groups represented on the x-axis and proportions on the y-axis.
By the end of 2011, Facebook had over 146 million users in the United States. Table 2.9 shows three age groups, the number of users in each age group, and the proportion (%) of users in each age group. Construct a bar graph using this data.
|Age groups||Number of Facebook users||Proportion (%) of Facebook users|
TRY IT 2.5
The population in Park City is made up of children, working-age adults, and retirees. Table 2.10 shows the three age groups, the number of people in the town from each age group, and the proportion (%) of people in each age group. Construct a bar graph showing the proportions.
|Age groups||Number of people||Proportion of population|
The columns in Table 2.11 contain: the race or ethnicity of students in U.S. Public Schools for the class of 2011, percentages for the Advanced Placement examine population for that class, and percentages for the overall student population. Create a bar graph with the student race or ethnicity (qualitative data) on the x-axis, and the Advanced Placement examinee population percentages on the y-axis.
|Race/Ethnicity||AP Examinee Population||Overall Student Population|
|1 = Asian, Asian American or Pacific Islander||10.3%||5.7%|
|2 = Black or African American||9.0%||14.7%|
|3 = Hispanic or Latino||17.0%||17.6%|
|4 = American Indian or Alaska Native||0.6%||1.1%|
|5 = White||57.1%||59.2%|
|6 = Not reported/other||6.0%||1.7%|
Park city is broken down into six voting districts. The table shows the percent of the total registered voter population that lives in each district as well as the percent total of the entire population that lives in each district. Construct a bar graph that shows the registered voter population by district.
|District||Registered voter population||Overall city population|