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Graphs
Graphs often collect a set of data in a group of people. There are many kinds of graphs: pie charts (circle charts), bar graphs, line graphs, data tables, pictographs, flow charts, histograms, etc.
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line graph is used when you wish to show the reader how one value changes with respect to one another , value over successive periods of time .
How do you create pie chart in iReport?
In iReports on the right hand side one tab will be there called "pallet". click on dat u will see "reportelements" in that one option called "charts" will be there drag that one in to ur report and select the pie chart ....
in the designer menu u will find the pie chart which u selected right click on that and select "ChartData" one window will open in that select "Details" tab... u will find add,modify,remove buttons. click on add u wil see four text areas naming series,category,value and label exprerssion in dat add ur feilds which u require..............
Bar graphs are usually used for comparing. You could go into more detail, but that's the gist of it..
What are the advantages of bar graphs?
Bar graphs show a record in column form so over a period of time comparisons of the recorded information can be clear to see
ADVANTAGES:-
1. Beautiful and neatly constructed diagrams/charts are more attractive then simple figures
2. Comparison is made easy and it will save time of the user to make quick comparison of large data.
3. You can record comparison between two things or objects.
What kind of data is best represented by a bar graph?
Data where a certain number of things fall in a category. ex. there are 16 kids in baseball, 8 kids in football, and 12 kids in soccer
ito ay isang uri ng graph na hugis bilog na ang hati ay pa tatsulok!
What is a proportional pie chart?
500 digits of pi, written as 50 digits in each row: 3.1415926535897932384626433832795028841971693993751 05820974944592307816406286208998628034825342117067 98214808651328230664709384460955058223172535940812 84811174502841027019385211055596446229489549303819 64428810975665933446128475648233786783165271201909 14564856692346034861045432664821339360726024914127 37245870066063155881748815209209628292540917153643 67892590360011330530548820466521384146951941511609 43305727036575959195309218611738193261179310511854 80744623799627495673518857527248912279381830119491 and also u can make your own pie but it has to began with 3.14
Difference between histogram and frequency polygon?
They are the same thing except that in a histogram you are using bars (like in a bar chart) to show the frequency, while a polygon uses points connected by straight lines
The way I have the students do it is to plot the x,y coordinates for your data ( x is the value of the random variable, y is the frequency )
If you are doing a frequency polygon, you just connect the dots with straight lines (you need to start at zero to the left of your first point and to the right of your last point)
If you are doing a histogram, just draw bars where the middle of each bar comes up to the x,y point
You can use a bar graph when you are working with numers. :)
When and where do you use a pictograph?
There are several different types of pictographs. A pictograph may be used to symbolise a word of a group of words in some cultures, such as Chinese or ancient Egyptian hieroglyphs. A pictograph may also be a chart or graph which uses symbols to represent values, such as population levels.
A pictograph shows the information that you have gathered (data) but it shows pictures to represent the info.
when you are trying to represent a frequency distribution or when you want to fool around with a girl
What is the difference between a line graph and a pie graph?
a pie graph is a circle shape or the shape of a pie. for each answer of the data given, it is then changed in to an angle which is transferred into the circle showing the percentage of data. A line graph is set up like a column graph except you don't put the columns in, instead you put a dot next to the number of data for each one you would draw a column next to. when you have drawn all the dots you join them together which makes a line and shows you the data.
A pie chart which is the most used chart in the business world is used to show how much something is worth compared to the whole thing. A chart is usually based on a 100% scale and each slice to the chart is a certain percentage of the whole thing. The bigger the slice is the more percentage of the whole thing is made up of that part or slice. It can be used to show how much something is liked compared to other things, business sales by each business compared to a whole and sports stats also.
Because the information can be easily read and therefore makes it easy to present and analyse data. Each section can be viewed easily with different sections and colours.
A pie chart is not used for sophisticated mathematical analysis. It is used to show how a given quantity is divided up, in a way can be easily seen.
A pie chart is best used when representing how the measured statistic, or "piece," fits into the whole "pie" (100%).
For example: In a family of 6, there is a father, mother, 3 brothers and 1 sister. A pie chart comparing males to females in this family would show a 72% male piece and a 38% female piece.
A line graph shows information that grows (raises) over a certain time.... Example: Growth of a plant within a year (timelaps)
What is a double line graph used for?
It is used to find the change in data. For example weather, high and low temperature. Hope this helped.
Why were Chinese pictographs created?
The ancient Chinese created pictographs as a way of explaining their ancient stories to their kids.They started drawing the pictures of the stones and showing the kids a story!
Later,they became pictographs!
Click on the 'Bar Graph' link below to see what a bar graph looks like.
When Do you Use A Double Line Graph?
A double line graph is used to compare two sets of data. Usually the data is taken over a period of time and compared at set intervals.
When would you use a pie chart or bar chart?
A bar chart can be used to show comparisons and trends. A pie chart can be used to show fractions of a whole or percentages.
