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Showing posts with the label Maths

### What is data?

By McDonald, T . | Date 14th of June 2019 We live in a world that is obsessed with data. Companies collect data on all types of people and things. You may have even heard the term big data or heard people talking about data, but actually is data?  Data is neither information not knowledge, so what is it? Data is not information. Information is according to Lexico.com, ‘ What is conveyed or represented by a particular arrangement or sequence of things .’ In other words, information is the arrangement of data into something meaningful. Information is usually generated in order to answer a question from raw data. Information is not data, but information does have data in it. Data is not knowledge either. Knowledge is some information that a person can use in conjunction with other information in a stack of knowledge. Lexico.com defines knowledge as, ‘ Facts, information, and skills acquired through experience or education; the theoretical or practical understanding o

### Number Types

Before you get started, you will need the following skills: Foil (Algebra - factoring) Exponent rules How to plot a graph How to divide and find the remainder  Surds You will learn about:  The different number types and be able to tell the difference. What a complex number is. How to add/subtract and multiply/divide complex numbers This ——>  ●  is a multiplication sign; i have used it in some places instead of x to avoid confusion Both rational and irrational are real numbers Rational numbers Can be expressed as a decimal or a repeating decimal like 3.333333…. or a fraction like 3/1 or 2/3. Rational numbers come in different types Natural              1, 2, 3, 4, 5 Whole              0, 1, 2, 3, 4         Integer              …-3, -2, -1, 0, 1, 2, 3… The difference between natural numbers and whole numbers is whole numbers includes 0 and natural numbers do not.  Integers have negatives, whereas whole and natural number