Does buying CDs depend on whether you own a smartphone or not? A survey asks a group of students if they buy CDs or not. It also asks if the students own a smartphone or not. The data are recorded in the contingency table below, and a chi- square Test of Independence at the 1% significance level is performed No CDs 23 7 30 Row Total 37 24 61 CDs Smartphone No Smartphone Column Total 31 T Help Copy to Clipboard Download CSV (a) Select the correct null and alternative hypotheses for this test. Select all that apply H0 : The two variables are dependent, so owning a smartphone does affect buying CDs. Ho:The two variables are independent, so owning a smartphone does not affect buying CDs Ha: The two variables are independent, so owning a smartphone does not affect buying CDs
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.
Select all that apply:
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H0: The two variables are dependent, so owning a smartphone does affect buying CDs.
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H0: The two variables are independent, so owning a smartphone does not affect buying CDs.
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Ha: The two variables are independent, so owning a smartphone does not affect buying CDs.
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Ha: The two variables are dependent, so owning a smartphone does affect buying CDs.
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