Graphs

It was the French mathematician Rene Descartes who created the coordinate plane.

It is an angle of 162 degrees.

A bar graph uses rectangles of equal width to represent numerical values of variables whereas a picture graph conveys information using pictures and symbols.

Bars are for single values or classes with uniform width, and the height of each bar is the frequency. In a histogram, the classes are of different width and the heights are proportional to the frequency density. The frequency, itself, is given by the area of the "bar" above the class.

A cluster in a line graph is the major part of the line graph that connects to the plot.

YES!You can see it in western antartica.

I'm not sure what the question means but here we go with an answer. Open ended questions are one that when asked can not be answer with a simple yes or no. The answerer must elaborate, explain and otherwise embellish in order to give an answer. To ask an open ended question you don't as "why" but rather "what" and "how". Until you get used to asking such questions a good idea to write them down down ahead of time until the become second nature to you.

There are statistical programs that can categorize open-ends. You could then create a chart based on the number of comments in each category.

A graph is a visual representation of numerical or other information, often used for comparative purposes. Mathematical graphs include those in geometry that indicate points, lines, and curves within a Cartesian coordinate system. Other types of graphs (bar graphs, pie graphs) display numerical values or percentages as lengths or areas, and may use colors to indicate the data for more than one set of values.

The answers will depend entirely on the questions of which none have been given.

Divide the central angle of the relevant pie segment by 360.

It depends on the scale of the map, the range of values attained within the area of the map, the units of measurement and the accuracy of the contour data.

It is no more nor less useful a source of information than any other. Some people find graphs easy to understand, others do not. Approximate values and trends may be sufficient for some purposes whereas for others the detailed numbers and statistical analyses are required.

To calculate the frequency density we will simply divide the frequency by the class width.

C on the calculator means Clear. So in other words you erase all of your calculations to start a new one. However CE on the other hand is used for clearing only one number and your entire calculation doesn't get erased.

No.

a type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line.

By hand.

Yes.

There is no reason why any graph should start from any particular point.

A linear equation!

The general form, in n-dimensional space, is

a1x1 + a2x2 + ...+ anxn = c

where the ai and c are constants and the xi are variables.

A sector.

Bar graphs are used for qualitative or discrete [quantitative] data. Values between the bar categories are not possible an to emphasise that, the bars have gaps between them. Conversely, histograms are used for continuous data and so the values on the "category" axis form a continuum. To illustrate this, the bars touch on another.

I learned this well before the internet was widely available so did not need a website.

In a book on very elementary statistics.