The bell then slopes down to each side; one side represents scores that are lower than the average, and the other side represents scores that are above the average. Mean: The mean is the average score. The average is calculated by adding all of the scores together, then dividing by the total number of scores. Standard Deviation: This is a measure of variability in a population. A low standard deviation means that most of the data points are very close to the same value.
What are some examples of biodegradable? Some examples of biodegradable include paper, cotton rag, banana peels and many more. These are products that are broken down by micro-organisms found in nature which mean â¦ s they do not harm the environment.
The oil is usually mineral based and the pigments can contain heavy metals. This means that when card or paper rots and degrades in the soil the oil and pigments are left to pollute the environment. Modern biodegradable inks are based on vegetable oils such as Soya oil, sunseed oil or rapeseed oil.These are naturally biodegradable. Modern biodegradable pigments are based on yellow, red and blue primary colours.nks have three basic components, varnish, oil and pigment. The pigment provides the actual colour, the oil allows smooth application of the colour and the varnish gives the final glossy finish. The varnish also protects the pigment from being rubbed away too easily or becoming cracked and damaged.