Below are four bivariate data sets and the scatter plot for each. (Note that each scatter plot is displayed on the same scale.) Each data set is made up of sample values drawn from a population. x y 1.0 1.0 2.0 2.0 3.0 3.0 4.0 4.0 5.0 5.0 6.0 6.0 7.0 7.0 8.0 8.0 9.0 9.0 10.0 10.0 y 1 2 3 4 5 6 7 8 9 10 11 x 1 2 3 4 5 6 7 8 9 10 11 0 Figure 1 u v 1.0 3.9 2.0 6.2 3.0 7.0 4.0 4.2 5.0 5.2 6.0 7.9 7.0 5.2 8.0 7.3 9.0 8.9 10.0 7.7 v 1 2 3 4 5 6 7 8 9 10 11 u 1 2 3 4 5 6 7 8 9 10 11 0 Figure 2 w t 1.0 8.2 2.0 5.0 3.0 3.8 4.0 2.2 5.0 1.6 6.0 1.9 7.0 2.5 8.0 2.9 9.0 5.3 10.0 7.4 t 1 2 3 4 5 6 7 8 9 10 11 w 1 2 3 4 5 6 7 8 9 10 11 0 Figure 3 m n 1.0 8.3 2.0 7.3 3.0 8.3 4.0 5.8 5.0 6.9 6.0 4.3 7.0 5.0 8.0 3.7 9.0 4.1 10.0 3.3 n 1 2 3 4 5 6 7 8 9 10 11 m 1 2 3 4 5 6 7 8 9 10 11 0 Figure 4 Answer the following questions. The same response may be the correct answer for more than one question. 1. Which data set indicates a perfect positive linear relationship between its two variables? Choose onethe x, y data set ? the u, v data set ? the w, t data set? the m, n data setnone of the data sets? 2. In which data set is there evidence of a strong nonlinear relationship between the two variables? Choose one the x, y data set? the u, v data set ? the w, t data set ? the m, n data set? none of the data sets? 3. Which data set indicates the strongest negative linear relationship between its two variables? Choose one the x, y data set? the u, v data set? the w, t data set? the m, n data set? 4. Which data set has an apparent negative, but not perfect, linear relationship between its two variables? Choose one the x, y data set ?the u, v data set ? the w, t data set ? the m, n data set? none of the data sets?
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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Answer the following questions. The same response may be the correct answer for more than one question.
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Given - The data are given in 4 different points
In Excel
To Find in a scatter diagram different four dataset
Step1) put the data set in two different column
Step 2) select the data
step 3) click on insert tab and choose the Scatter diagram option
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