
Mean, median, and mode review (article) | Khan Academy
Mean, median, and mode are different measures of center in a numerical data set. They each try to summarize a dataset with a single number to represent a "typical" data point from the dataset.
Terms, factors, and coefficients review (article) | Khan Academy
A term is a part of an equation that is separated by addition or subtraction from other terms. For example 3 + 8x - g + y^7 has 4 terms as 3, 8x, g, and y^7 are all separated by addition or …
Terms, factors, & coefficients (video) | Khan Academy
In math expressions, terms are the components added or subtracted, factors are the elements multiplied within each term, and coefficients are the numbers multiplying variables. …
Calculating the mean (article) - Khan Academy
Learn how to calculate the mean by walking through some basic examples & trying practice problems. The mean is used to summarize a data set. It is a measure of the center of a data …
Statistics intro: Mean, median, & mode (video) | Khan Academy
The arithmetic mean is just the regular old mean, or average. To get it, you sum up all the values and divide by n. The reason why it is sometimes called the arithmetic mean is that there are …
Translations review (article) - Khan Academy
Honestly, i thought translations, rotations, reflections and dilations would be hard as i just came from 7th grade. Turns out it's easier than the 7th grade math, Lol- Also, Has math always been …
Number opposites (article) | Khan Academy
Thus, there are two pairs of opposites (in math language, they are additive inverses), A and E is one, B and D is the other. One thing that you will learn if you have not already is that additive …
Distributive property explained (article) | Khan Academy
We usually use the distributive property because the two terms inside the parentheses can’t be added because they’re not like terms Make sure you apply the outside number to all of the …
Mean absolute deviation (MAD) review (article) | Khan Academy
The mean absolute deviation (MAD) is the mean (average) distance between each data value and the mean of the data set. It can be used to quantify the spread in the data set and also be …
Differentiation: definition and basic derivative rules - Khan Academy
Defining the derivative of a function and using derivative notation Learn Formal definition of the derivative as a limit