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Statistics - Coggle Diagram
Statistics
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Mean
The arithmetic average, calculated by adding all the values together and dividing them by the total number of scores
(+) The mean can be said to be representative of all the data collected as it is calculated using all the individual values.
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Median
The middle value of a set of numbers that has been placed in numerical order. if there are an even number of scores, the median is the mid-point between the two middle scores and therefore might not be one of the original scores.
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Range
The difference between the highest and lowest scores in a given set of data. It is calculated by subtracting the lowest value to the highest value in a set of data.
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Percentages
Show the rate, number or amount of something with every 100. they are calculated by dividing the participants results/score by the total number and then multiplying by 100.
Percentage Increase: Work out the difference between the two numbers you are comparing and then divide by original number and multiply by 100.
Percentage Decrease: Find out the difference between the two numbers and divide by original number and multiply by 100 - if it is negative its an increase
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Measures of dispersion are often used to demonstrate the effectiveness of a treatment - large = treatment is only effective to some people