Circle graphs

Circle graphs, or pie charts, are used to represent parts of a whole. Often, they are shown as percentages of the whole. Percents were reviewed in Chapter 6 of this book. 

The circle graph shows the number of candies in a package, arranged by color. 

In the circle graph shown below, if Carla has a total of 60 items in her wardrobe, how many of them are black ... 

In the circle graph below, if there are 50 total teachers, what percent of them are Social Studies teachers ... 

Could the data in the graph be presented in the form of a circle graph Explain. 

Tie population of the United States is becoming more diverse. The circle graphs below show the distribution of the U.S. population among five ethnic groups in 1990 and 2000. The estimated total U.S. population for those two years was 2.488 X 108 in 1990 and 2.754 X 108 in 2000. 

Make a bar graph that compares the population for the five groups in 1990 and 2000. In what ways is the bar graph better than the circle graphs In what way is it less useful ... 

Pie charts show how the parts of a whole relate to one another. A pie chart is a circle divided into slices or wedges. Each sfice represents a category. Pie charts are sometimes called circle graphs. Let s look at an example of a pie chart on the following page and see what kind of information it provides. 

What do circle graphs and bar graphs have in common ... 

What type of data can be displayed on a circle graph On a bar graph ... 

Circle graphs show parts of a whole. Bar graphs can show how a factor varies with time, location, or temperature. 

Investigate the total amount of salt used in the U.S. Construct a circle graph showing the different uses and amounts. Discuss each of these areas in detail. Salt was once used as a currency of high value. Find out why this was the case. 

Construct a circle graph to illustrate the amount of water used for various purposes by an average person each day. 

Create a circle graph or bar graph comparing the amounts of electrolytes found in the sport drinks you compared. 

Data in tables can be displayed in a graph—a visual representation of data. Common graph types include line graphs, bar graphs, and circle graphs. 

Circle Graph To display data as parts of a whole, you might use a circle graph. A circle graph is a circle divided into sections that represent the relative size of each piece of data. The entire circle represents 100%, half represents 50%, and so on. 

Example Air is made up of 78% nitrogen, 21% oxygen, and 1% other gases. Display the composition of air in a circle graph. 

Practice Problem Draw a circle graph to represent the amount of aluminum collected during the week shown in the bar graph to the left. 

Devise a monthly home budget and determine the fractional part each expense is to the total monthly income. Create a circle graph of this information to illustrate how each expense relates to the whole. 

A vivid means of representation is the circular graph (Fig. 3.37). In the lower part of the circle the relative proportions of anions are illustrated, and cations in the upper part. The circle radius is directly proportional to total mineralization. The alternative circle graph by H. Udluft expresses water composition in detail (Fig. 3.38). In addition to the content of main ions, the contents of other ions are also taken into consideration (broken lines). Concentric circles in the centre of the graph illustrate the contents of gases and silicic acid in mg 1 . The outer circles express temperature (each of them represents an increase of 20° C). The area of a circle is proportional to mineralization. 

STEP 3 Staple along the fold. Label as follows Types of Graphs, Circle Graphs, Bar Graphs, and Line Graphs. 

Figure 2.14 Although the percentage data presented in the table and the circle graph are basically the same, the circle graph makes it much easier to analyze. 

The circle graph at the right gives the percent composition for a blue solid. What is the empirical formula for this solid ... 

The composition of a hydrate is given in the circle graph shown at the right. / " ... 

The circle graph in Figure 10.21 shows the percent composition of a compound containing barium, carbon, and oxygen. What is the empirical formula of this compound ... 

The sum in Eq. (109) consists of all connected graphs, with and without black articulation circles. Graphs that are free of articulation circles are called stars, 1-irreducible, or at least doubly connected (ALDC). 

Fig. 13.12 Graph (a) Polarization curves (filled symbols) and power density curves (unfilled symbols) of 6F-PBI using H air (squares) and H2/O2 (circles). Graph (b) Polarization curves of 6F-PBI using H2/air (circles) and reformate/air (triangles) [50]...

An irreducible graph has no articulation circles. Graph c in Fig. 3 is an example of an irreducible graph. 

---