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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.
2,316 Questions
Line graphs show the relationship between the change in one variable to the change in another. (change)
On a computer, a line graph shows lots of pixels.
What should a well constructed histogram reveal to you?
It should reveal the frequency density of the variable for the well-defined classes. From this, it should be easy to work out the exact frequency in each class.
How do you work out a peace of pie on pie chart?
A sector or piece (not peace!) representing x % of the total has an central angle of 3.6*x degrees.
Why don't you connect the dots on the line graph?
This question cannot be answered in a sensible way because it is based on a misunderstanding. The dots in a line graph ARE connected. That is what a line graph is. If they are not connected then it is a scatter graph.
What does (00) mean in a graph?
On the Cartesian plane it is at point of origin whose coordinate is (0, 0)
How did a pictograph differ from an ideograph?
A pictograph is a visual translation of an object and Abstract ideas cannot have pictographs since they can't be visually translated. They are given a visual form by giving an 'idea' or an example of what they mean. For example the idea of barging in or to dash in can be represented by showing a horse running through a door. The character for 'to rush in ' is therefore 闖 or 闯. This is an ideogram.
How would you know that the boundary line is enclosed in a graph?
The boundary line is solid. If not it will be a dashed line.
How would you calculate the angle to show twenty percent on a circle graph?
Multiply the percentage by 3.6
What is the range of distribution in a bar graph?
The height of the highest bar minus the height of the lowest bar.
What does a box plot tell you vs a histogram?
A box plot summarises data in five items of information:
the minimum, lower quartile, median, upper quartile and maximum.
The histogram gives the probability density for each group of values.
There are a few good things about graphs. Graphs help gather data making it easier for people to short things out.
What would a graph about masses and volumes represent?
A graph about masses and volumes would represent density.
Where on a line graph records what you are measuring?
The information must be given on the axis label or in the title of the graph.
What is are the differences between circle graphs line graphs and bar graphs?
Circle graphs show data in a circle, while line graphs are akin to join the dots, and a bar graph shows data in vertical or horizontal bars, but all three show the same data results.
How are line graphs used to show how to variables are related?
i searched this and got nothing so... srry try something else please
Why is it important to be careful using and making graphs?
For a graph to be accurate, it is important to be as careful as possible.
Is it true or false that the slope of the line on a speed-time graph tells the speed?
False. If speed is on the y-axis and time is on the x-axis, then any point (a,b) on the line will tell you the speed a at any given time b. The slope of the line will tell you the change in speed with respect to time, which we call acceleration.
Why do scientist use table and graph in presenting their data or experiment?
While doing the experiment we can assume many different outcomes. Like for example when you play baseball what is the guarantee that the ball wont swing to the left or the right or its trajectory wont change.
Thus scientists tabulate their findings. They then graphically represent them. The graphical representation is used to derive the conclusion for the experiment. Like for example when you are trying to derive Ohm's law you first tabulate the data and then plot a graph for the data you found out. The graph can represent:-
- A straight line confirming that the current is directly proportional to the potential difference across the conductor.
- A parabola, then the current is not directly proportional. It depends as a square of the other.
Thus with these examples we see the importance of tabulation and graph plotting. Now graph plotting is very useful for computer models.
