Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
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SOLVING PR OBLEMS USING
SCATT ER PLOTS
Let's try a negative association.
Use the line tool to draw a line of best fit,
extending the line of best to find the
y-intercept.
2.
Student
1.
Absences vs Grades
100
Choose two points on the line to calculate
slope.
Use the values to write the equation.
80
3.
Where does the line of best fit intersect the
60
y-axis?
y-intercept =
40
Using two points on the line, calculate slope
(remember the scale is NOT Counting by ones).
slope =
2468 10 12 14 16 18 22 24 26 28 30 32
Equation: y=
Absences
...
er notes](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0ada4e3b-a672-409a-a219-41339634ea2b%2Fc302e492-3196-4f10-95a4-077e2d44688f%2F63mpkde_processed.jpeg&w=3840&q=75)
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