Rene descartes invented bar graphs you can find more about him in the book."A flyon the celieng."
How are line graphs used to show how two variables are related?
i searched this and got nothing so... srry try something else please
What is the definition of data table?
data cable is an instrument like wire which is used to transfer data or other information from one place to another, one computer to another, the example of this types is LAN,WAN,MAN
Why are line graphs powerful tools in science?
In my experience line graphs are powerful in science because of the relationship they show between two variables (showing how one variable changes as the other changes). But, more importantly in my view they allow the derivation of fomulas. For example, the formula v=u+at can be derived (notice the similarity to the equation of a line, y=mx+c) by drawing a graph showing speed against time.
What is an exploded slice in a pie chart?
An exploded slice in a pie chart is a slice of the chart pulled away to empasize a data point.
An "exploded" slice is one that has been made to "pop out" of the pie, in a way, moving the slice away from the centre of the chart in order to offset it. It provides visual emphasis.
bimodal histogram is a histogram where there are two clear high points on the graph.
ex.) age of people at a preschool play group. There would be preschool age and adult age. Not many teenagers or elderly. Bimodal...the ages representing preschool and adult (parents?) would stand above the rest
What is the purpose of a key in a bar graph?
It's so you can tell what the different coloured bars represent. A bit pointless though if there is only one data set.
What are the advantages to pie charts?
summarize large amount of data in visual form
is easily understood
Data can be easily compared
Could you use a line graph to show data about how body mass changes with height?
Yes, because a line graph deals with change over time, and so does height.
What type of data can line graphs display?
Line graphs are used to display data to show how one variable (the Responding variable) changes in response to another variable (the Manipulated variable).
Why is it important to use multiple lines in a line graph?
It's important to use multiple lines in a line graph so that you can identify each categories without confusion.
How do you work out degrees in a pie chart?
If you are working from a percentage you simply take the figure and multiply by 3.6.
eg. 24% is 24 x 3.6 = 86
Cheers
What is the advantage of using multiple lines in a line graph?
You can compare two different data sets on the same chart.
What are the steps in plotting a line graph?
There are seven steps which are:
1. Identify the variables
2. Determine the variable range
3. Determine the scale of the graph
4. Number and label each axis
5. Plot the data points
6. Draw the graph
7. Title the graph
How is a line graph similar to a bar graph?
they're similar because the both of them trend and trend means to increase or decrease
In carrying out a controlled experiment what does a data table help you do?
It helps you record your data. A data table provides an organized way to collect and record observations.
Where do you place the independent variable on a line graph?
The independent variable is typically placed on the x-axis.