In algebra a quadratic equation from the Latin quadratus for square is any equation that can be rearranged in standard form as ax²bxc0 where x represents an unknown and a b and c represent known numbers where a 0. A average or arithmetic mean n the number of terms eg the number of items or numbers being averaged x 1 the value of each individual item in the list of numbers being averaged. May mean that A is a proper subset of B that is the two sets are different and every element of A belongs to B.
Weighted p th-power means are defined by.
X y means x is greater than or equal to y. In other words it is the sum divided by the count. To calculate the mean you Add up all the numbers in the data set. X the mean E Xi the summation of the scores n the number of cases in the sample The mean should be used with variables measured at the interval-ratio level Variance and Standard Deviation The distances between the scores and the mean are technically called.