Chapter 10: Statistics & Regression Calculations

Broken line plot A broken line graph for the frequency distribution of sample (x)

(B.L.)Three types of points can be selected from circle, cross and square.

The correlation of points between histogram and broken line plot are shown on the right. (The broken line is displayed by connect- ing the upper left points of the bars of the histogram, as the upper left point of each bar represents

each class value in the histo- gram.)

The calculator can draw both a histogram and a broken line plot at the same time.

Normal probability plot (N.P.)

Normal distribution plot (N.D.)

Plots the variance of the standardized normal distribution with the statistical data (x) on the X axis or Y axis.

If the points plot almost linearly, it indicates that the data is of normal distribution.

The distance between the dots is set by the Xscl.

•The Xscl can be changed between 1 and 64. Use the Window Setting Menu to change the figure. (See page 57)

•You cannot set the frequency in the Normal probability plot. The statistical data must be created using only one list without splitting into the data and frequency.

A normal distribution curve of sample(x)

The x-axis is in the range of

Xmin to Xmax.

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Sharp EL-9900 operation manual Normal probability plot N.P Normal distribution plot N.D
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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.
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