Statistics report (link)
Introduction :-
Statistical coefficients that can be used to find out the relationship of any variables in
study with each other, and thus the possibility of studying the relationship between them.
Some correlation coefficients help us to know if the relationship between a variable and a variable is
The last relationship is linear (the more one variable increases the other) or non-linear. It can also be used
Correlation coefficients for measuring the degree of correlation between two variables
The concept of connection:
Correlation is a relationship between two variables, and it is one of the types of relationships between the dependent variable and the variable
The independent so that some observations of the dependent variable are determined in the light of the independent variable
is an independent variable y is a dependent variable and x where
The importance of the link
It is used for forecasting and planning, so the change in the independent phenomenon can be taken as evidence of
The change in the subordinate pure
Clarification :- We monitor the change in the independent phenomenon and from this we predict the expected change in
dependent phenomenon
correlation coefficient:
It has a set of Y and X is a numerical measure of the strength of the association between two variables such as
characteristics which are
It is the coefficient of C 1 where <C> - 1 - The value of the correlation coefficient ranges between 1.1 - that is 1
link
2- The following criterion is used to judge the correlation coefficient to describe the correlation coefficient
1 and it decreases as we get closer,- a- the strength of the relationship increases as the correlation coefficient approaches from the sides 1
from zero
b- If the correlation coefficient belongs to (1.0), then the relationship is positive
0) the relationship is inverse,-
c- If the correlation coefficient belongs to (1 .)
d- If the coefficient is equal to 1, then the relationship is absolute (complete)
e- If the coefficient is -1, then the relationship is absolutely inverse
f- If the correlation coefficient is zero, then there is no relationship
3- If all the points of the spreading plate lie on a straight line, then the correlation coefficient is
equals +,- 1
Sources
1- Principles of Statistics book by Dr. Ahmed Abdel Samie, first edition
1429 AH - 2008 AD
2- Principles of Statistics book, Tishreen University, Faculty of Science, by Dr. Mubarak Asbar Deeb
