Changes in price indices - Double bar chart

"A price index (plural: “price indices” or “price indexes”) is a normalized average (typically a weighted average) of price relatives for a given class of goods or services in a given region, during a given interval of time. It is a statistic designed to help to compare how these price relatives, taken as a whole, differ between time periods or geographical locations.
Price indexes have several potential uses. For particularly broad indices, the index can be said to measure the economy's general price level or a cost of living. More narrow price indices can help producers with business plans and pricing. Sometimes, they can be useful in helping to guide investment." [Price index. Wikipedia]
The double bar chart example "Changes in price indices" was redrawn from the website of the United States Department of Agriculture Economic Research Service. [ers.usda.gov/ data-products/ chart-gallery/ detail.aspx?chartId=29456&ref=collection#.Ue5MMaxad5I]
The double bar chart example "Changes in price indices" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Bar Graphs solution from the Graphs and Charts area of ConceptDraw Solution Park.

This double bar chart example was drawn on the base of picture "Nitrate Concentration (milligrams per liter; mg/ L) in Community Water Systems (CWS), Mean and Maximum by Year, New Mexico 1999-2012" from the New Mexico's Indicator-Based Information System (NM-IBIS) website.
"Nitrate toxicity is a preventable cause of methemoglobinemia (blue baby syndrome), especially in infants. Infants younger than 4 months of age are at greatest risk of toxicity from nitrate-contaminated drinking water.
These infants are more susceptible to developing methemoglobinemia because the pH of their gut is normally higher (less acidic) than in older children and adults. The higher pH enhances the conversion of ingested nitrate to the more toxic nitrite. The bacterial flora of a young infant's gut is also different from that found in older children and adults and might be more likely to convert ingested nitrate to nitrite. Gastroenteritis can increase body transformation of nitrate to nitrite and absorption into the bloodstream of nitrite from the large intestine.
A large proportion of hemoglobin in young infants is in the form of fetal hemoglobin. Fetal hemoglobin is more readily oxidized to methemoglobin (MHg) by nitrites than is adult hemoglobin. In addition, in infants, the enzyme (NADH-dependent methemoglobin reductase) responsible for reduction of formed MHg back to normal hemoglobin has only about half the activity it has in adults.
Symptoms such as shortness of breath and bluish skin coloring around the mouth, hands, or feet, can occur in infants rapidly over a period of days. If the condition is severe, it could lead to convulsions, coma, and even death, if untreated. Most older children and adults can take in larger amounts of nitrate without experiencing the same health effects as infants. However, pregnant women, nursing mothers, and people with low stomach acid conditions or those deficient in an enzyme that changes MHg back to normal hemoglobin are more susceptible to nitrate-induced methemoglobinemia and could be affected by water with nitrate levels above 10 mg/ L.
Adverse reproductive outcomes such as spontaneous abortions, intrauterine growth retardation, and various birth defects such as anencephaly have been reported in scientific literature from exposure to high nitrate levels in drinking water; however, the evidence is inconsistent.
Little is known about possible health effects from high nitrate level exposure over a long period of time. However, some studies suggest that there might be a risk of stomach, esophageal or bladder cancers in people with prolonged ingestion of high levels of nitrate. This might be due to the formation of nitrosoamines in the body following ingestion exposure to high levels of nitrate.
International Agency for Research on Cancer (IARC) classified ingested nitrate or nitrite as probably carcinogenic to humans (Group 2A) under conditions that result in formation of nitroso-compounds (e.g., nitrosoamines) in the body (endogenous nitrosation)." [ibis.health.state.nm.us/ indicator/ view/ CommWaterNitrates.MeanMax.Year.html]
The double bar graph example "Nitrate concentration in Community Water Systems (CWS)" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Bar Graphs solution from the Graphs and Charts area of ConceptDraw Solution Park.

"Bar graphs can ... be used for more complex comparisons of data with grouped bar charts and stacked bar charts. In a grouped bar chart, for each categorical group there are two or more bars. These bars are color-coded to represent a particular grouping. For example, a business owner with two stores might make a grouped bar chart with different colored bars to represent each store: the horizontal axis would show the months of the year and the vertical axis would show the revenue. Alternatively, a stacked bar chart could be used. The stacked bar chart stacks bars that represent different groups on top of each other. The height of the resulting bar shows the combined result of the groups. However, stacked bar charts are not suited to datasets where some groups have negative values. In such cases, grouped bar charts are preferable." [Bar chart. Wikipedia]
The double bar graph template for the ConceptDraw PRO diagramming and vector drawing software is included in the Bar Graphs solution from the Graphs and Charts area of ConceptDraw Solution Park.

The vector stencils library "Composition charts" contains 6 templates: 2 pie charts, 2 divided bar charts and 2 double divided bar charts.
The vector stencils library "Composition indicators" contains 6 templates of visual indicators.
Use these design elements to visualize composition comparison of your data in your visual dashboard created using the ConceptDraw PRO diagramming and vector drawing software.
"A pie chart (or a circle graph) is a circular chart divided into sectors, illustrating numerical proportion. In a pie chart, the arc length of each sector (and consequently its central angle and area), is proportional to the quantity it represents. While it is named for its resemblance to a pie which has been sliced, there are variations on the way it can be presented. ...
An obvious flaw exhibited by pie charts is that they cannot show more than a few values without separating the visual encoding (the “slices”) from the data they represent (typically percentages). When slices become too small, pie charts have to rely on colors, textures or arrows so the reader can understand them. This makes them unsuitable for use with larger amounts of data. Pie charts also take up a larger amount of space on the page compared to the more flexible alternative of bar charts, which do not need to have separate legends, and can also display other values such as averages or targets at the same time. ...
Most subjects have difficulty ordering the slices in the pie chart by size; when the bar chart is used the comparison is much easier. Similarly, comparisons between data sets are easier using the bar chart. However, if the goal is to compare a given category (a slice of the pie) with the total (the whole pie) in a single chart and the multiple is close to 25 or 50 percent, then a pie chart can often be more effective than a bar graph." [Pie chart. Wikipedia]
The example "Design elements - Composition charts and indicators" is included in the Composition Dashboard solution from the area "What is a Dashboard" of ConceptDraw Solution Park.

"Alpine skiing at the 2010 Winter Olympics was held at Whistler Creekside in Whistler, British Columbia, Canada. The ten events were scheduled for 13–27 February, 2010; weather delayed the first event, the men's downhill, two days until Monday, 15 February. ... Notably absent from the medals in these Olympics were the Austrian men, who had won 8 medals in 2006 and 7 in 2002. France and host Canada were shut out from the podium, as were the German men and the Swiss and Italian women. The U.S. had its best Olympics ever with eight alpine medals, only the fourth nation to achieve that total in a single Olympics (Austria, France, Switzerland). Individually, three men and five women won multiple medals; triple medalists were Bode Miller of the U.S. and Aksel Lund Svindal of Norway, who both won a medal of each color. The sole double gold medalist was Maria Riesch of Germany." [Alpine skiing at the 2010 Winter Olympics. wikipedia]
This medal bar chart example "Alpine skiing at the 2010 Winter Olympics" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Winter Sports solution.
The Winter Sports solution from the Sport area of ConceptDraw Solution Park contains the vector stencils library "Winter sports pictograms" and examples of diagrams and infographics.