And the heights are 4 inches,ģ inches, 1 inch, 6 inches, and another one's 1 inch,Īnd another one is 7 inches. The way, let's think about how we can describe data. Of inferential statistics, make inferences. Inferences about that data, start to make conclusions, With a smaller set of numbers? So that's what we're Of data, and if we want to tell somethingĪbout all of that data without giving themĪll of the data, can we somehow describe it Into the world of statistics, we will be doingĪ lot of what we can call descriptive statistics. To understand or get our head around data. Into the world of statistics, which is really a way But if we remove one of the ones, since every number would be represented equally, there would be no mode. For example, in the set of numbers from earlier (1, 1, 3, 4, 6, 7), the mode would be 1. Rule: If all the numbers are represented equally (basically if there are the same amount of each number, if that makes sense,) there is no mode. Mode: The most common number in a set (the number that repeats itself the most). We add them together to get 7, then divide it by 2 to get a median of 3.5.) However, this DOES NOT apply to a set of numbers with an odd set of numbers in it. (In the set of numbers we had earlier, 3 and 4 were the middle numbers. Then you divide them by two to get the median. Rule: When faced with a set of numbers where the amount of numbers in it are all even, you take the two middle numbers and add them. Statistics: the study and manipulation of data (basically it's just data)ĭescriptive statistics: Showing data while summarizing or using a smaller set of numbers.Īverage: (these are just words to describe average) In general, mean, typical, middle, central tendency.Īrithmetic mean (or just mean, I just like arithmetic mean more): The process of adding a set of numbers, then dividing by the amount of numbers.
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