It is a measure of how spread out the values. Obviously, you couldĪlso look at things like the median and the mode. The range close rangeThe difference between the highest and lowest values in a set of numbers. The arithmetic mean, where you actually take So this is going to be what? 90 plus 60 is 150. The mid-range would be theĪverage of these two numbers. With the mid-range is you take the average of the One way of thinking to some degree of kind ofĬentral tendency, so mid-range. The tighter the range, just to use the word itself, of The larger the differenceīetween the largest and the smallest number. If we say that the range is some set of numbers, n, between and including 0 and 100, this means that our range is 0, 100, and all of the numbers between 0 and 100. This is easy to tell from a quadratic functions vertex form, y a ( x h) 2 + k. See, if this was 95 minus 65, it would be 30. It turns out all we need to know in order to determine the range of a quadratic function is the y -value of the vertex of its graph, and whether it opens up or down. Want to subtract the smallest of the numbers. To calculate range, subtract the smallest number from the largest. Largest of these numbers, I'll circle it in magenta, The range is the difference between the highest and lowest values within a set of numbers. The way you calculate it is that you just It serves as one of two important features of a data set. So what the range tells us isĮssentially how spread apart these numbers are, and In statistics, the range is the difference between the maximum and minimum values of a data set. Mid-range of the following sets of numbers. In statistics you're given the numbers and you have to figure out what kind of equation they describe. In ordinary math you're given the relationship of the equation and you just have to plug in the numbers. Do people going to the beach make the temperature go up? Or is it the other way around? In this example it is obvious, but lots of times it isn't. Sometimes there is a relationship, sometimes there is not, and even when there is a relationship it isn't aways easy to figure out what it is. In statistics you're basically given two or more variables (x, y, etc) and you have to figure out if there is a relationship among them. This is referred to as an open interval because it doesnt include the endpoints. The range is one of the measures of dispersion of. The range would be all the numbers between 0 and 100, but not including 0 and 100. In ordinary mathematics you're given a relationship in the form of an equation (x+y = z) that you can then plug numbers into and get an answer. In statistics and mathematics, range is the difference between the largest and smallest values in a dataset. In this case there obviously is, but in other examples the relationship isn't so obvious. For example, if the temperature goes up on the thermometer, and you count more people going to the beach, then you might want to determine whether there is a relationship between the two things. Statistics attempt to establish the relationship between one or more measured things.
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