Mean, Sum, Population Standard Deviation, Sample Standard Deviation, Min, Max, Median, Q1, Q3 Note to CASIO - add in Chi-Squared values and you will have all the lab scientists and social scientists queueing up as well! All with a few taps - just entering the values and reading off the result.
For example, one can calculate the probability that three coins out of five will show Heads (0.2734375) the probability that a person is taller than two standard deviations from the mean (0.05399096651) a two-tailed 95% Normal confidence interval (+/- 1.959964028) etc. I can now finally dispense with my statistical tables - Binomial, Poisson and even Normal distributions are now covered completely. This was, for me, the main reason for my purchase. The previous limit was 3 x 3 matrices, although even this was sufficient to handle most exam questions. Matrices can now be input up to 5 x 5, with the calculator happily finding determinants, sums, products and even inverses. Also, by using the Inequality function on a quadratic, cubic or quartic polynomial, one can quickly find the points on the graph (if any) where it crosses the x-axis. Similarly systems of simultaneous equations now go up to four equations in four unknowns. It can find a root for any general equation using Newton-Raphson to refine a user-supplied initial approximation. The machine will solve algebraically any polynomial equation up to 4th degree (quartics). Incredible power to solve equations and systems of equations or inequalities. The new Random Integer function makes it easy to simulate coin flips, dice rolls and even card selections or lottery draws, opening up possibilities for a huge variety of mathematical experiments and games.įactorising large numbers into powers of prime factors with a single FACT command - amazing. The incredibly high definition screen and multi-line display options make it easy to enter calculations and see answers in textbook style and clarity - be they with fractions, brackets, surds (roots), or any combination. Some of the new features that make this compelling for me are as follows: If a parent/guardian needs to access, correct or delete data submitted by their child, they may contact CasioCalculators-MEA.As a user of casio calculators, I am confident that the fx 991 ex is quite possibly the best classroom calculator they have ever produced.Īimed squarely at the Secondary school, this would be the calculator of choice for any student. If Casio Calculators ME.com learns that it has inadvertently collected the personal information of a child under 14 years of age or for a child between the ages of 14 to 17 years old without appropriate parent/guardian consent, then CASIO will use reasonable efforts to delete that information from the system. Please immediately contact at if you believe that has unintentionally collected personal information from a child under 13 years or without the consent of the child’s parent/guardian of a child between the age of 14 and 17 years. Children between the ages of 14 and17 years are not permitted to register on the forum without the consent of the child’s parent or legal guardian.Ĭhild parent must review and agree to the Privacy Policy, Terms of use of Child’s Information before they can begin the account creation process for their child. The term “ parent” below, shall refer to child’s parent or legal guardians.Ĭhildren under the age of 14, are not permitted to create an account or register to. The terms (“ Child” or “ Children“) shall refer to persons under the age of 18 years of age.
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