The partial results below are based on a sample of recently trained workers, to determine if the number of hours of training time received (X, in hours) has helped in improving the time taken to troubleshoot a process problem (Y, in minutes). Summary Statistics Variable Mean Variance Uncorrected SS Corrected SS (SSxx) 29 6.93 6.852217 1585 191.8621 Y 29 16.58621 25.39409 8689 711.0345 Parameter Estimates Variable Parameter Standard Estimate Error Intercept 29.58501 0.61797 Training (X) -1.87545 0.08359 Standard Error 1.15784 R-Square 0.9491 What is the upper limit of the 98% confidence interval estimate for the average time taken to troubleshoot a process problem, of all workers with 415.8 minutes of trainirg time?
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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