it means that there are two numbers that are not constant. the value of each number is always related to the other based on an internal function/formual. those two vairables are usually related through a 3rd constant
For example, look at surface of a rectangle that is 100 square meters.
its length might be 10, and its width ten
or its length might be 20, and its width 5
the length and width are vairables (changing), but they are related in a way that they always produce the same constant (surface).
a simple 2d xy line graph has only the possibility for 2 different variables (x and y). for a 3 variable graph you would have to go into a 3d xyz graph with each variable as x, y and z. it is possible to fit a line to this but for an easier analysis it is better to analyse the variables in pairs.
The independent variable - if there is one. A variable that is common to a number of pairs of variables that you wish to compare. For example, if you want to compare height and mass at various ages, the age would be on the x-axis.
To take a simple case, let's suppose you have a set of pairs (x1, y1), (x2, y2), ... (xn, yn). You have obtained these by choosing the x values and then observing the corresponding y values experimentally. This set of pairs would be called a sample.For whatever reason, you assume that the y's and related to the x's by some function f(.), whose parameters are, say, a1, a2, ... . In far the most frequent case, the y's will be assumed to be a simple linear function of the x's: y = f(x) = a + bx.Since you have observed the y's experimentally they will almost always be subject to some error. Therefore, you apply some statistical method for obtaining an estimate of f(.) using the sample of pairs that you have.This estimate can be called the sample regression function. (The theoretical or 'true' function f(.) would simply be called the regression function, because it does not depend on the sample.)
The answer is r.Actually 'r' is the usual symbol for the correlation coefficient statistic calculated for a sampleof paired values. The correlation coefficient for a population of pairs of random variables distributed according to a binomial normal distribution is usually denoted by the Greek letter 'rho'.
C.The Dow-Jones Industrial Average and careless spending (+)D.Time of the year and home heating bills (+)noA.In US cities in one year, number of sunny days and per capita income (-)B.Among US adult males, weight and amount of money spent on jewelry (+)E.An automobile's gas mileage and amount of food its driver consumes (+)
The number of times a pencil is sharpened and its length
The ratio of the two variables is not the same for all pairs.
One to one.
one million
I'd hate to give you a definition like, "Related pairs of numbers are pairs of numbers that are related" so let's just go with an example. Let the first number of a pair represent a quantity of bicycles. Let the second number represent the number of tires per bicycle. With 1 bicycle you would have 2 tires, with 2 you would have 4 and so on. (1,2)(2,4)(3,6)(4,8) are related pairs of numbers.
Number of factor pairs = number of rectangles
I'd hate to give you a definition like, "Related pairs of numbers are pairs of numbers that are related" so let's just go with an example. Let the first number of a pair represent a quantity of bicycles. Let the second number represent the number of tires per bicycle. With 1 bicycle you would have 2 tires, with 2 you would have 4 and so on. (1,2)(2,4)(3,6)(4,8) are related pairs of numbers.
Pairs of scores from a correlational study are usually plotted on a scatter plot. This allows researchers to visualize the relationship between the variables and assess the strength and direction of the correlation.
"Dose" is a measured portion of a medicine. I am not aware of any factor pairs related to dose 18 or any other measured quantities of medication!18 does have 3 factor pairs.
student's t test
Cephalic refers to the head. The appendages related to eating include the mandibles and two pairs of maxillae. There are also three pairs of maxillipeds that move food towards the mouth.
Forces in pairs are called action and reaction forces, according to Newton's third law of motion. This law states that for every action, there is an equal and opposite reaction.