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$25 · Hewlett-Packard HP21S Statistics/Math Calculator

Hewlett-Packard HP21S Statistics/Math Calculator A complete machine for students, the HP-21S will see you through all your statistics and math requirements. It contains all the essential functions for college level math and trigonometry, making a complete machine for all students in social science, agriculture, natural science and psychology. Statistical Distribution Functions: Replaces the stat tables used in calculating standard normal, F, t, chi-square, and binomial distributions. Eliminates the need to interpolate between values. Probability and Statistics: Essential functions for statistics classes are built in: linear regression, mean, sample and population standard deviation, combinations/permutations, random number generator. Built-in Statistical Program Library: Saves valuable programming time. Just press a few keys to find these solutions: 1- and 2-variable test statistics including routines for hypothesis testing and constructing confidence intervals - linear regression test statistics - chi-square test statistics - binomial distribution - time value of money for loans, learning and savings Essential College Math Functions: Square, exponential square root, reciprocal, natural log and anti-log, PI, percent, percent change, absolute value, integer part, fractional part and round. Trigonometry Functions: Sine, cosine, tangent, arc sine, arc cosine, arc tangent, degrees, radians, and grads Algebraic Entry Systems: Enter your problem just as you would write it on paper. Keystroke Programming: Simplify repetitive problems by entering the keystrokes as a program. Then use it anytime for fast, effortless solutions. These go for anywhere from $75.00 - $195.00 on the well known sell sites Asking $25.00 OBO

Ad #
39544703
Posted
May 23, 2022
Expiry
August 21, 2022
Status
NOT SOLD
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