The data show the bug chirps per minute at different temperatures. Find the regression equation, letting the first variable be the independent (x) variable. Find the be oredicted temperature for a time when a bug is chirping at the rate of 3000 chirps per minute. Use a significance level of 0.05. What is wrong with this predicted valu Chirps in 1 min Temperature (°F) 757 1035 989 75.4 763 1229 990 5 72.7 95.6 69.6 86.6 82 What is the regression equation? Round the x-coefficient to four decimal places as needed. Round the constant to two decimal places as needed.)
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.
Software procedure for regression in Excel.
- Enter the given data in EXCEL sheet as Chirps in 1 minute in column A, temperature in column B.
- Go to Data > Data Analysis > Regression.
- Select x and y ranges with labels.
- Click OK.
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