Texas Instruments Inc. TI-84 Plus Silver Edition Blue Graphing Calculator

!±8±Texas Instruments Inc. TI-84 Plus Silver Edition Blue Graphing Calculator

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Post Date : Dec 16, 2011 06:23:08
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Texas Instruments Inc. TI-84 Plus Silver Edition Blue Graphing CalculatorThe latest and greatest for high school students. An enhanced version of the TI-83 Plus, the nation's best-selling high school graphing calculator, the TI-84 Plus Silver Edition offers a built-in USB port, 9x the memory and 2.5x the speed of the TI-83 Plus. Already preloaded are 30 software Apps, including Cabri Jr. for algebra and geometry andPeriodic Table for science and chemistry. High-resolution, 8-line display includes horizontal and vertical split-screen options and exponents. Convert matrices to lists and vice-versa. Solve numerically for different variables in an equation with the interactive equation solver editor. Build scatter plots, xy-line plots, histograms and probabilityplots for statistics. Graph rectangular functions, parametric and polar expressions, and recursively-defined sequences. Practice for college-entranceexams with SAT StudyCards and official AP Biologyexam review questions. Use the included cable to download new Apps, share data with a classmate or connect to any TI presentation tool and display your work to the class. Changeable color faceplates and kickstand slide case available separately. Features:* Electronically upgradeable operating system and features with extensive programmingcapability* 30 preloaded software Apps, including including Cabri Jr.* 9x the memory and 2.5xthe speed of the TI-83 Plus* Built-in USB portand cable (included) make sharing data with a classmate easy* Prep for college with AP* Biology exam review questions and SAT StudyCards* Connect to any TI presentation tool (adapter sold separately)

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Scatter Graphs

!±8± Scatter Graphs

Scatter graph is a graph, which help to plot the information on two related variables. It consists of plotted points, which are scattered all around the X-Y grid. The main use of the scatter graph is to visualize the strength of the co-relation between the two metrics. It can also be said that scatter graphs are used to create the relationship between two variables for a set of paired data. They are mainly used in Science to study relationships between two variables. So it has been found that the pattern of the scatter describes the relationship and the trend lines should follow a trend of the data. Join as many points as possible and leave an equal number of unconnected points on either side.

Scatter graph is a graph, which is like the basic line graphs and require minimum of two numeric data attributes. The pattern of the scatter graph reveals a relationship between the two variables measured by the X and Y axes or in the case of a 3 dimensional form, it will be among the three variables which are measured by X, Y, and Z axes). In a 2 dimensional scatter graphs; one can illustrate trends in the plotted points by just adding a regression curve. It has been noted that the scatter graphs can show multiple data sets, each of which is represented by a different symbol, and each will have any number of data points.

Scatter graph are the one, which clearly establish the data correlation and is one of the best method to illustrate a non-linear pattern. It can be used for data extrapolation and interpolation. A scatter graph generally shows the discrete values which don't occur at regular intervals or which belong to a series. That makes it different from a line graph, which are drawn using only the symbols.

One of the main advantages of a scatter graph is that it demonstrates a typical relationship, which is generally not so clear in various graphing methods normally used. While using standard functions in the Graphics Server DLL, we can define a scatter graph by normally supplying an X position for each data point. It should also be noted that when we use a Graph Control or when we use Graphics Server's autograph DLL, no X positions is supplied and the it will place points at X increments of 1 automatically, starting at 0.

It should be noted that in 3 dimensional (3D) scatter graphs, Z positions are not handled in this way and we needs to supply a Z value for each and every point. We can display scatter plots alone, curves alone, or both while using a 2 dimensional (2D) scatter graphs. While in a 3D scatter graphs, its totally different and we can connect points in the same set with a continuous line. Also we can drop a vertical line from each point.

The limitation of a scatter graph is that, they can just show relationship between two variables at a time. They can also show incorrect graph analysis if there are only few data points available.

Main use of a scatter graph is to visualize the actual measurements or observations on a grid which may reveals patterns and trends (by adding the curves) in those data used on the grid.

Scatter Graphs

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EXCEL Tutorial - How to Construct a Compounding Interest Financial Calculator

!±8± EXCEL Tutorial - How to Construct a Compounding Interest Financial Calculator

You can construct an almost infinite variety of calculators right within your MS EXCEL spreadsheet application.

Here is how you can construct your own 10-year compounding interest financial calculator that would help you to see, for example, how much your 0 will grow at x percent of interest a year, on a year by year basis.

1) Launch a clean worksheet in Excel.

2) Reserve the cell A1 for your principal dollar amount. Think of this as your "deposit" in the bank.

3) Reserve the cell B1 for your annual interest rate (entered as a decimal number like 5.6 or 34.8, etc).

4) In cell C1, enter the following formula into the text input bar just above the spreadsheet and then click the green check-box icon to save the formula into cell C1:

=A1 + ((A1/100) * B1)

This formula will take the amount you enter into cell A1, divide it into 100, and then multiply it by the annual interest rate B1, and then add it to the original A1 amount to give you the total COMPOUNDED amount at the end of year one. For example, for 0 of deposit (A1) at 5% a year (B1), the C1 value should be should be 5.

Now here comes the exciting part.

5) Click and select cell C1 so that Excel should display a black rectangle around the cell. When you bring your cursor to the lower right corner of the cell, your cursor should turn into a dark and slim plus sign ("+").

6) Click and drag the cell C1 down as many cells as you want along the C column. This automatically copies the formula in C1 to all the other cells - but not perfectly. Now you need to adjust each formula slightly.

If you click on the unadjusted cell C2, you will see the following formula:

=A2+((A2/100)*B2)

7) Change this by replacing all "A2"s with "C1" because you would like to have the C1 amount get compounded, not the amount in A2 (which is empty).

So the correct formula for C2 becomes:

=C1+((C1/100)*B1)

Similarly, the correct formula for C10 becomes:

=C9+((C9/100)*B1)

Now your calculator is ready for testing.

Plug in 100 for A1 and 5 for B1 and you'll have 2.8 dollars at the end of 10 years.

What if the interest rate went up by one percent to 6%? Change B1 to 6 and you will have 9 dollars at the end of 10 years.

You can easily stretch this calculator to 20 or 30 years by adding the necessary additional rows to column C and adjusting the formula for each cell accordingly, as explained above.

Happy savings!

EXCEL Tutorial - How to Construct a Compounding Interest Financial Calculator

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Making the best of your TI-83 or TI-84 calculator on the AP Calculus Exam: Part 1

!±8± Making the best of your TI-83 or TI-84 calculator on the AP Calculus Exam: Part 1

Making the best of your TI-83 or TI-84 calculator on the AP Calculus Exam: Part 1

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