a.)Which is the most appropriate scatter plot for this data ? •Scatterplot A •Scatterplot B •Scatterplot C b.) Define the relationship between X and Y •Negative •Strong •positive •Moderate •Nonlinear •Linear
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.
a.)Which is the most appropriate
•Scatterplot A
•Scatterplot B
•Scatterplot C
b.) Define the relationship between X and Y
•Negative
•Strong
•positive
•Moderate
•Nonlinear
•Linear
a)
The scatter plot is obtained using EXCEL. The software procedure is given below:
- Enter the data.
- Select Insert > Charts > Scatter > Scatter with only Markers.
The output using EXCEL is as follows:
From the EXCEL output, the most appropriate scatter plot for this data is scatterplot A.
Correct Answer: Scatterplot A.
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