Probability vs Needs

Replace your statistical tables with an interactive, graphical app! Compute probabilities & percentiles, and plot the probability density/mass function for the normal (Gaussian), t, chi-square, F, exponential, gamma, beta, log-normal, and Uniform, binomial, geometric (2 versions), hypergeometric, Poisson, and negative binomial (2 versions) distributions. Now supports Español.

You speak first. That is the whole idea. Needs is an English course you do, not one you watch. Every zone starts from a real situation: ordering in a café, asking directions, the chemist, the doctor, a phone call, a complaint, a chat with a neighbour. Each one ends in something you can do. Grammar and vocabulary are moves inside the situation, never separate drills. What you do Speak into the microphone and get scored on your pronunciation. The recording stops by itself when you finish. Read aloud, sentence by sentence, and hear the phrase read back in a real voice. Type real answers to open questions, and the app corrects them. Tap any word to see it in your own language. Colour in a real work of art, by Vermeer, Van Gogh and others, as you learn. The painting is the reward. Where you start A placement test puts you at a level that fits. It is measured, not guessed. From there you work through six settings, London through to World, from A1 up to C1: 168 zones in all. Survival, free The English you need on day one. Money, a taxi, a hotel, the chemist, an emergency, an SOS. Exam and professional courses Cambridge B2 First, C1 Advanced and C2 Proficiency, paper by paper, and Business English. They come with Pro. When the day is over Bedtime Mode: a bedtime story, a poem, a song and soft vocabulary, on a dark, calm screen. Also inside Sir York's Library, with a Grammar Bank, Sounds of English pronunciation practice, and Today's World: news, videos and podcasts. A daily goal of three activities, and a streak. Sir York is a small dog, and he guides you through the app. No adverts, anywhere. The app speaks Spanish and English. Free to use: Pro adds things, and nothing about getting in requires paying. Made by Verónica Arena, an English teacher. Instituto Needs, Buenos Aires. There is no large company behind it. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Our terms: https://veroare-needs-app.expo.app/legal?doc=terms Privacy Policy: https://veroare-needs-app.expo.app/legal?doc=privacy