8.0 7.6 E 7.2 6.8 6.4 M S Substrate Type
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.
streams in the Adirondack Mountains to look for any
differences in the effects of acid rain. They measured the
pH (acidity) of the water and classified the streams with
respect to the kind of substrate (type of rock over which
they flow). A lower pH
stone, mixed, or shale):
the pH of streams with limestone and shale substrates:
Difference Between Means = 0.735
t-Statistic = 16.30 w>133 df
p ... 0.0001
b) From the information you have, do the assumptions
and conditions appear to be met?
c) What conclusion would you draw?
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