Students can learn about Bar Graphs from the Bar Graph Examples. They can get help with plotting bar graphs from the online Statistics tutors.
A bar chart or bar graph is a chart with rectangular bars with lengths proportional to the values that they represent. The bars can also be plotted horizontally.
Bar charts are used for plotting discrete (or 'discontinuous') data i.e. data which has discrete values and is not continuous. Some examples of discontinuous data include 'shoe size' or 'eye color', for which you would use a bar chart. In contrast, some examples of continuous data would be 'height' or 'weight'. A bar chart is very useful if you are trying to record certain information whether it is continuous or not continuous data.
Examples of bar graphs
Definition for bar graph:
Bar graph can be either vertical or horizontal. There may be just one bar or more than one bar for each interval. Sometimes each bar is divided into two or more parts. The data is made up of more than one category. In this section, you will work with a variety of bar graphs. Be sure to read all titles, keys, and labels to completely understand all the data that is presented. The Bar graph examples cover all the types of bar graphs.
Examples of bar graphs:
Bar graph Examples 1:
The results for last year high school math grades have been calculated. How many more 9th graders made A’s in math than 11th graders?
Solution:
Step1: Looking under the category of A’s, locate the graph for 8th graders. The interval on the left side of the bar graph reads 75 at the highest points on the graph for 8th graders. That means 75 8th graders made an A in math class.
Step 2: Now do the same thing in step 1 again except the time instead of looking at the graph for 8th graders. We look at the graph for 10th graders. The interval on the left side of the bar graph reads 50 at the highest point on the graph for 10th graders. That means 50 10th graders made an A in math class.
Step 3: Subtract the 50 10th graders from the 75 8th graders. There is an excess of 25 students. This means that 25 more 8th graders made on A in math than 10th graders.
Example for bar graphs 2:
Bar graph Examples 2 :
Graph show the number of rainy days in the months since May to September. How various rainy days are here in July, August, and September altogether?
Solution:
Find the number of rainy days in every of the three months and add them alone
Step 1: Find the months scheduled along the horizontal axis.
The months are scheduled in a row from May to September.
Step 2: Locate the bars for July, August and September.
Step 3: Find the number of rainy days for July, August and September. Move up the bar from the label “July” until you approach to the top of the bar. After that move to the left to discover the number of rainy days. The answer is 7, since the top of the bar is halfway among the 6 and 8. Do the same for August and September.
July – 7 rainy days
August – 3 rainy days
September – 6 rainy days
Step 4: Add the three months:
7 + 3 + 6 = 16 rainy days
There are 16 rainy days in July, August and September.
Students can also avail help with Statistics homework problems involving Bar graph examples from the online tutors.
A bar chart or bar graph is a chart with rectangular bars with lengths proportional to the values that they represent. The bars can also be plotted horizontally.
Bar charts are used for plotting discrete (or 'discontinuous') data i.e. data which has discrete values and is not continuous. Some examples of discontinuous data include 'shoe size' or 'eye color', for which you would use a bar chart. In contrast, some examples of continuous data would be 'height' or 'weight'. A bar chart is very useful if you are trying to record certain information whether it is continuous or not continuous data.
Examples of bar graphs
Definition for bar graph:
Bar graph can be either vertical or horizontal. There may be just one bar or more than one bar for each interval. Sometimes each bar is divided into two or more parts. The data is made up of more than one category. In this section, you will work with a variety of bar graphs. Be sure to read all titles, keys, and labels to completely understand all the data that is presented. The Bar graph examples cover all the types of bar graphs.
Examples of bar graphs:
Bar graph Examples 1:
The results for last year high school math grades have been calculated. How many more 9th graders made A’s in math than 11th graders?
Solution:
Step1: Looking under the category of A’s, locate the graph for 8th graders. The interval on the left side of the bar graph reads 75 at the highest points on the graph for 8th graders. That means 75 8th graders made an A in math class.
Step 2: Now do the same thing in step 1 again except the time instead of looking at the graph for 8th graders. We look at the graph for 10th graders. The interval on the left side of the bar graph reads 50 at the highest point on the graph for 10th graders. That means 50 10th graders made an A in math class.
Step 3: Subtract the 50 10th graders from the 75 8th graders. There is an excess of 25 students. This means that 25 more 8th graders made on A in math than 10th graders.
Example for bar graphs 2:
Bar graph Examples 2 :
Graph show the number of rainy days in the months since May to September. How various rainy days are here in July, August, and September altogether?
Solution:
Find the number of rainy days in every of the three months and add them alone
Step 1: Find the months scheduled along the horizontal axis.
The months are scheduled in a row from May to September.
Step 2: Locate the bars for July, August and September.
Step 3: Find the number of rainy days for July, August and September. Move up the bar from the label “July” until you approach to the top of the bar. After that move to the left to discover the number of rainy days. The answer is 7, since the top of the bar is halfway among the 6 and 8. Do the same for August and September.
July – 7 rainy days
August – 3 rainy days
September – 6 rainy days
Step 4: Add the three months:
7 + 3 + 6 = 16 rainy days
There are 16 rainy days in July, August and September.
Students can also avail help with Statistics homework problems involving Bar graph examples from the online tutors.
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