a) Find the value of the linear correlation coefficient ? b) Find the critical values of r from table A-6 using ∝= 0.05 c) Determine whether there is sufficient evidence to support a claim of a linear correlation Between the two variables. d) Find the regression equation,
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.
Q5. Crickets and Temperature
Find the best predicted temperature at a time when a cricket chirps 3000 times in 1 minute. What
is wrong with this predicted temperature?
Chirps in 1
min
882 1188 1104 864 1200 1032 960 900
Temperature
0?
69.7 93.3 84.3 76.3 88.6 82.6 71.6 79.6
a) Find the value of the linear
b) Find the critical values of r from table A-6 using ∝= 0.05
c) Determine whether there is sufficient evidence to support a claim of a linear correlation
Between the two variables.
d) Find the regression equation,
e) Letting the first variable be the predictor (x) variable, find the indicated predicted value.
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