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Jan 12, 2023 · Range is the difference between the greatest and smallest value in a data set. Learn how to calculate range using a simple formula and see examples of range in sports, populations and more.
Learn the meaning of range as the difference between the lowest and highest values in a data set, or as the output values of a function. See an example of range calculation and a comparison with mean and median.
Learn how to calculate the range of a set of numbers, which is the difference between the lowest and highest values. Find out why the range can be misleading and how to use other measures of spread.
Learn the definition and formula of the range of a function, the set of all possible outputs the function can produce. See examples, worked examples, and tips from other users on the Khan Academy website.
- 7 min
- If g(x)=x^2/x and x^2/x=x then can we say that: g(x)=x And if we can, how than for x=0 this expressi...When you start with a reciprocal function, you will have at least one vertical asymptote in which the function does not have a value. So by startin...
- OK so I'm totally lost by this. Is this at all like the domain on the function? They seem totally di...The domain of a function is the set of all acceptable input values (X-values). The range of a function is the set of all output values (Y-values)....
- what is the difference between f(x) and y values?f(x) is Y. The equation `f(x) = 2x - 5` is the same a `y = 2x - 5` provided the equation with Y is a function. Not all equation are functions. So,...
- At 2:22 Sal says that the definition is F(x) is going to be equal to x^2. Does that mean that if I h...Yes - that is how it works, if you have f(x)=x² and are asked what is f(2), then you replace every instance of x in the function definition with 2...
- Sorry if this was asked already but what is a non real number and what would an example be?Non-real numbers are called imaginary numbers and are based on i=√-1. You cannot take the square root of negative numbers, so you move to imaginary...
- what is parabolaA parabola is created by a quadratic function such as y=x^2. It looks like a U.
- What if the input is an imaginary number (i) ? how will the graph be?You do not graph imaginary numbers on the Cartesian plane, you move to the Argand plane (or plot or diagram) which is also called the complex plane...
- At 3:43 why cant y be negative? Is this true for all problems or only dis oneTo answer you question of if it is always true, the answer is no. If you start from the quadratic parent function, y=x^2, then y cannot be negative...
- In Sal's last example, isn't it supposed to be g(x) instead of f(x) since he used a different variab...Yes he said the wrong thing but it should have been g(x)!
Range is the difference between the highest and lowest values in a data set. It tells us how far apart the data points are spread or how much variability they have. Learn how to calculate range using formulas, examples, facts and FAQs on this web page.
- What are quartiles in statistics?Quartiles are the points (a set of three points) that divide the data into four equal parts or quarters. The first, second, and third quartile is r...
- What is the interquartile range?The interquartile range (IQR) is the difference between the upper quartile $(Q_3)$ and the lower quartile $(Q_1)$. $IQR = Q_3 \\;−\\; Q_1$
- What is the difference between mean and range?Mean is the average of all the numbers in the given data. It is the best way to analyze the central tendency of the data. It uses all the data poin...
Sep 11, 2020 · Range is the difference between the highest and lowest values in a data set. Learn how to calculate the range by hand or with a calculator, and see how it measures variability and is affected by outliers.
Learn how to calculate the range and mid-range of a set of numerical data, and see how they measure variability and central tendency. Watch a video and read comments from other learners.
- 2 min
- Sal Khan,Monterey Institute for Technology and Education
