Coding Sometimes data needs to be coded for further use with calculations. This is particularly useful with data that deals with very small or very large numbers, or with data that needs to be clas...
Standard Deviation & Variance The?variance?is another measure for the spread of the data, it measures the variability from the mean of the data. What is the variance and the standard deviation?...
Frequency Tables In most cases in your statistics course, you will come across data that is presented in a?frequency table. These allow data to be summarised and make them easier to work with. Ungr...
Types of Data What are the different types of data? Qualitative?data is data that is usually given in words not numbers to?describe?something For example: the colour of a teacher's car Quantitative...
Collisions - Multiple Collisions Can there be multiple collisions? After?two objects collide?it is possible that one (or both) of them?collides with something else?such as A?third object A?wall?(pe...
Collisions What is a direct collision? A?direct collision?is when two objects are travelling along the?same straight line?when they collide Before?the collision: One?of the objects could be?station...
Momentum What is momentum? Any object that has mass and is moving has?momentum Momentum?measures the quantity of motion that an object has Momentum is a?vector?quantity - so it has a?magnitude?and?...
Power What is power? Power is developed as an engine or machine does?work Power is the rate of doing work, usually by the?driving force?of an engine It is the same as?work done per second The work ...
Conservation of Energy What is conservation of energy? The?principle of conservation of mechanical energy?states that when a particle is moving and?no external forces?other than gravity act to do?w...
