Graphs

if you mean as in photographic memory which means when you are able to remember stuff for example....8+9-7+6=16 you might forget that in a second but people with photo graphic memory can remember it forever.

it goes on the data table

it depends on what kind of data you are desplaying. if there is only one type of data that is all related and conected, a line graph would be a good thing to use.

Florence Nightingale Made the pie chart ,also if you watch Horrible Histories On cbbc It tells you that.

For the same sorts of uses as they are today : to illustrate how a total value is divided into smaller groups.

A pie chart (a circle divided into slices of various angular widths) is used to show comparative percentages within a whole. The size of a slice is proportional to the share that is assigned to a given subgroup, role, or division. For example, a pie chart for business revenue can be divided into wedges showing the sources of that revenue (sales, stock dividends, franchising), and the sales wedge could be 2/3 or 3/4 of the pie, with other earnings areas having smaller slices.

It can also be called a circular graph

It will be determined by the values that are being represented. All the values together are taken as being the whole pie, and then the slices are allocated according to how much of the total each figure makes.

With a protractor

if it is a computer generated pie chart, find the fraction, and divide into 360

The most obvious thing is that they look different. A pie chart is circular whereas a bar chart consists of bars of different lengths. A pie chart can only be used for one series of data, to see how each part contributes to the whole thing, by seeing the various pie slices and their sizes as part of the whole pie. Bar charts can consist of more than one series and compare different things to each other and can show trends.

You can label anyting you want on it. For example: there are 22 dogs and 33 cats.

to represent and compare datas to it.

A pictogram, possibly.

You can compare by seeing where the maximum, minimum, and median are in the histogram s and by also seeing where the histograms cluster at.

A broken bar graph is used when one value, or a few values, goes up very high. Instead of scaling everything down, the abnormally high value is indicated with the broken bar graph. Of course, a number also has to be indicated, so that anybody who reads the bar graph can find out what the number actually is.

class width times frequency density gives you the frequency

Bar graphs and line graphs are designed to show different values of two or more subjects. They both organize data. They both use an x-axis and a y-axis.

just have the numbers going up have a negative

-100 l

-50 l

0 l

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The reliability of pie charts in a newspaper depends on the reliability of the data sources. If the sources of data are correct and the graph is constructed correctly, then the pie chart is reliable.

Here's a link. http://www.iss.k12.nc.us/schools/sharon/kaybrown/weather/pictograph1.GIF

A right or positive skew means the data in the histogram will tail out to the right. See the related link figure 15.6 and it shows a right skew.

You could use the range to select the scale for the axis.

A key or legend.

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The x-axis