Use the following linear regression equation to answer the questions. X3=-17.3+3.7x1+9.6x4-2.0x7 a) which number is the constant term? List the coefficient explanatory variables. constant= x1 coefficient = x4 coefficient = x7 coefficient = b) if x1=1, x4=-3, x7=5, what is the predicted value for x3?(round you answer to one decimal place.) c) suppose x1 and x7 were held at fixed but arbitrary values. If x4 increased by 1 unit what would we expect the corresponding change in x3 to be? if x4 increased by 3 units what would be the corresponding expected change in x3? if x4 decreased by 2 units what would we expect for the corresponding change in x3?
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.
Use the following linear regression equation to answer the questions. X3=-17.3+3.7x1+9.6x4-2.0x7
a) which number is the constant term? List the coefficient explanatory variables.
constant=
x1 coefficient =
x4 coefficient =
x7 coefficient =
b) if x1=1, x4=-3, x7=5, what is the predicted value for x3?(round you answer to one decimal place.)
c) suppose x1 and x7 were held at fixed but arbitrary values.
If x4 increased by 1 unit what would we expect the corresponding change in x3 to be?
if x4 increased by 3 units what would be the corresponding expected change in x3?
if x4 decreased by 2 units what would we expect for the corresponding change in x3?
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