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Correlation and Regression
CORRELATION is an important statistical concept which refers to association or interrelationship among variables.
The reasons of studying correlation is for one to be capable to establish a relationship, plan and control the inputs as independent variables and the output as dependent variables
In business one may be interested to establish whether there exists a relationship among the
i. Amount of fertilizer applied on a described farm and the resulting harvest
ii. Amount of experience one has and the corresponding performance/presentation
iii. Amount of money spent on advertisement and the expected incomes after sale of the goods or service
There are two methods which measure the degree of correlation among two variables these are denoted by R and r.
how to do multiplication
It's now time to do solving systems of differential equations. We've noticed that solutions to the system, x?' = A x? It will be the form of, x? = ?h e l t Here l and
Q. Negative Signs in Fractions? It really doesn't matter where you put a negative sign in a fraction. The following are all the same: The negative sign can go in
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1/sec A+tan A =1-sin A /cos A
what is the greatest projection range down an inclined plane? how we will calculate that?
Function notation: Next we have to take a rapid look at function notation. Function notation is nothing more than way of writing the y in a function which will let to simplify not
Some important issue of graph Before moving on to the next example, there are some important things to note. Firstly, in almost all problems a graph is pretty much needed.
Q. a(b - c)x^2 + b(c - a)x + c(a - b) = 0 has equal roots then b = ? Ans: Condition that a quadratic equation ax² + bx + c = 0 has equal roots is: Its discriminant, b² - 4ac = 0 A
1. Using suffix trees, give an algorithm to find a longest common substring shared among three input strings: s 1 of length n 1 , s 2 of length n 2 and s 3 of length n 3 .
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