1262centerwin3yes MAT 213 OL1 Elementary Statistics Shayjunna Jones & | 02/03/21 12:18 AM Homework: Homework 3 Save Score: 0 of 3 pts 3 of 20 (2 complete) HW Score: 5%, 3 of 60 pts 4.2.50 Question Help Use the given data to do the following. a. Find the regression equation for the data points. b. Graph the regression equation and the data points. 5 a. Find the regression equation for the datn nointe (Round to two decimal places as That's incorrect. The regression equation for a set of n data points is y = bo + b, x where sy3D Sy Exy-(Ex) (E») /n b, = E -(Ex)*/n is the slope of the regression line and bo = y-b,x is the y-intercept of the regression line. OK Enter your answer in the answer box and then click Check Answer Clear A Check Answer Kemaining All rights reserved. Policy Pemissions Contact Us Copyright 2021 Pparson EdUcation
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.
Here,
x | y | xy | ||
4 | 7 | 28 | 16 | 49 |
1 | 1 | 1 | 1 | 1 |
5 | 9 | 45 | 25 | 81 |
3 | 4 | 12 | 9 | 16 |
2 | 0 | 0 | 4 | 0 |
Total 15 | 21 | 86 | 55 | 147 |
where
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