There is a correlation between the number of hours you study for an Exam and a higher score. The following data was collected from a recent class survey compairing the Number of hours spent preparing for an exam and that person final score. Data Follows: Kyle studied 1 hr, score 65%, Sue studied 4 hrs, 88%, Jim studied 3 hrs, 80%, Paul studied 0 hrs, 63%, Alex studied 5 hrs, 97%, Linda studied 2 hrs, 73%, Mindy studied 4.5 hrs, 90%, Joel studied 1.5 hrs, 72%. DISPLAY THE DATA ON A LINE GRAPH USING THE "X" AXIS FOR THE NUMBER OF HOURS STUDIED, AND USE "Y" AXIS FOR THE SCORES EARNED ON TEST. WHEN COMPLETED, DRAW A FITTED LINE TO SHOW A NEGTIVE OR POSTIVE CORRELATION.
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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Data Follows: Kyle studied 1 hr, score 65%, Sue studied 4 hrs, 88%, Jim studied 3 hrs, 80%, Paul studied 0 hrs, 63%, Alex studied 5 hrs, 97%, Linda studied 2 hrs, 73%, Mindy studied 4.5 hrs, 90%, Joel studied 1.5 hrs, 72%.
DISPLAY THE DATA ON A LINE GRAPH USING THE "X" AXIS FOR THE NUMBER OF HOURS STUDIED, AND USE "Y" AXIS FOR THE SCORES EARNED ON TEST.
WHEN COMPLETED, DRAW A FITTED LINE TO SHOW A NEGTIVE OR POSTIVE CORRELATION.
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