Definition Definition Method in statistics by which an observation’s uncertainty can be quantified. The main use of interval estimating is for describing a range that is made by transforming a point estimate by determining the range of values, or interval within which the population parameter is likely to fall. This range helps in measuring its precision.
Chapter 14, Problem 77PS
a.
To determine
Find the multiple regression equation.
b.
To determine
Interpret the slopes of the regression equation.
c.
To determine
Predict the mean number of wins for a team that has an ERA of 4.50 and 4.6 runs scored per game.
d.
To determine
Perform a residual analysis on the given model and determine whether regression assumptions are valid or not.
e.
To determine
Determine whether there is a significant relationship between the number of wins and two independent variables at 5% significance level.
f.
To determine
Determine the p-value in part (e) and interpret it.
g.
To determine
Interpret the meaning of the coefficient of multiple determination.
h.
To determine
Determine the adjusted r2 .
i.
To determine
Determine whether each independent variable makes a significant contribution to the regression model and indicate the most appropriate regression model.
j.
To determine
Determine the p-value in part (i) and interpret it.
k.
To determine
Determine 95% confidence interval estimate of the population slope between the wins and the ERA.
l
To determine
Compute and interpret the coefficients of partial determination.
m.
To determine
Explain which is more important in predicting wins-pitching, measured as ERA or offense, measured by runs scored per game.
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