A study was conducted to examine the quality of fish after seven days in ice storage. For this study: Y = measurement of fish quality (on a 10 point scale with 10 = BEST.); X = # of hours after being caught that the fish were packed in ice. The regression line is: y-hat = 8.5−.5x. From this we can say that: A one hour delay in packing the fish in ice increases the estimated quality by .5 A one hour delay in packing the fish in ice decreases the estimated quality by .5 If the estimated quality increases by 1 the fish have been packed in ice two hours later. If the estimated quality increases by 1 then the fish have been packed in ice one hour sooner. Can’t really say until we see a plot of the data.
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 study was conducted to examine the quality of fish after seven days in ice storage. For this study: Y = measurement of fish quality (on a 10 point scale with 10 = BEST.); X = # of hours after being caught that the fish were packed in ice. The regression line is:
y-hat = 8.5−.5x. From this we can say that:
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A one hour delay in packing the fish in ice increases the estimated quality by .5 |
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A one hour delay in packing the fish in ice decreases the estimated quality by .5 |
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If the estimated quality increases by 1 the fish have been packed in ice two hours later. |
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If the estimated quality increases by 1 then the fish have been packed in ice one hour sooner. |
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Can’t really say until we see a plot of the data. |
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