Chapter 10: Statistics & Regression Calculations

Enter a data in a list table

Plotting the data

Selecting the graph type

Drawing a regression curve using quadratic regression

1.Press SAE.

2.Enter the time into list 1 (L1).

3.Enter the temperature into list 2 (L2).

1.Press [AE.

2.Press Eto turn on the plotting.

3.Press }and 'to select XY of DATA menu and press

E.

Freq will change to ListY and set L2 to ListY.

1.Press }to move the cursor to GRAPH.

2.Press [Gand 2(2 Scattr+) to set the graph type to scatter and point type to “+”.

3.Press ZA9(9 Stat) to plot the scatter diagram for this data.

•Selecting A9in the ZOOM mode allows for quick graphing in an optimum range since window setting values of the graph plotting screen are automatically set using the list data.

1.Press #CSD04(04 Rg_x2).

2.Press (@1,@2,@ zAEA1).

If you enter Y1 as the last variable, the obtained formula will automatically be set to the formula Y1.

3.Press E.

The regression formula and parameters will be displayed on the screen.

4.Press G.

The calculator will draw the scatter diagram using the deter- mined parameter values.

5.If there is a large difference between the regression curve and plotted dots, change the regression curve and repeat the above procedures.

164

Page 173 Page 175
Page 174
Image 174
Sharp EL-9900 operation manual Press #CSD0404 Rgx2
Page 173 Page 175

EL-9900 specifications

The Sharp EL-9900 is a remarkable scientific calculator that exhibits a fusion of advanced features, cutting-edge technology, and an ergonomic design tailored for both students and professionals. One of the standout characteristics of the EL-9900 is its extensive range of functions, boasting over 550 built-in calculations that cover various mathematical and scientific disciplines. This calculator is particularly popular among engineering and physics students due to its ability to handle complex calculations with ease.

One of the key features of the EL-9900 is its 2-line display, which allows users to view both the input and the result simultaneously. This dual display enhances usability, especially when dealing with intermediate steps in calculations. The calculator also includes a built-in 12-digit LCD screen, which ensures clarity and precision in reading numbers, making it easier for users to work for extended periods without straining their eyes.

The EL-9900 is equipped with a wide array of mathematical functions, including trigonometric, logarithmic, and exponential functions. Notably, it supports fraction calculations, statistical analyses, and unit conversions. Its advanced programming capabilities, such as 36 programmable functions and the ability to store data, further enhance its functionality, allowing users to create custom calculations tailored to specific needs.

One of the more modern technologies incorporated into the EL-9900 is its solar-powered function, which is complemented by a battery backup, ensuring that the device remains operable in varied lighting conditions. This environmentally friendly design reduces the need for frequent battery replacements, making it a cost-effective choice for users.

In terms of design, the Sharp EL-9900 boasts a slim profile and lightweight construction, which makes it portable and easy to carry. Its durable casing ensures that it can withstand the rigors of daily use, whether in a classroom setting or a professional environment.

Overall, the Sharp EL-9900 stands out as a versatile scientific calculator packed with features designed to meet the needs of students and professionals alike. Its robust functionality, clear display, and user-friendly design make it a reliable tool for anyone engaged in mathematical and scientific pursuits. Whether used for basic calculations or advanced problem-solving, the EL-9900 remains a powerhouse in the realm of scientific calculators.
Top Page Image Contents