23. Suppose the classes for an organized set of data are as follows: please fill in the A column and answer B and C.
Class 
A. 
B. 
C. 
MidPoint 
What is the value of class width? 
Into which class is the value 1.515 assigned? 

0.235 – 0.875 

0.875 – 1.515 

1.515 – 2.155 
24.Please fill in the blank and answer the following questions:
SUMMARY OUTPUT 

Regression Statistics 

Multiple R 
__________ 

R Square 
__________ 

Adjusted R Square 
0.125 

Standard Error 
__________ 

Observations 
__________ 

ANOVA 

df 
SS 
MS 
F 
Significance F 

Regression 
1 
0.828 
__________ 
__________ 
0.2308 

Residual 
__________ 
2.227 
__________ 

Total 
6 
__________ 

Coefficients 
Standard Error 
t Stat 
Pvalue 
Lower 95% 
Upper 95% 
Lower 95.0% 
Upper 95.0% 

Intercept 
112.413 
9.484 
11.853 
7.52722E05 
88.033 
136.793 
_____ 
__________ 

X 
19.137 
14.033 
1.364 
0.231 
55.211 
16.937 
___ 
__________ 

What is the coefficient of determination? 
What is the coefficient of correlation? 
Interpret the coefficient of determination 
Interpret the coefficient of correlation 
23)
Mid point = (Lower Limit + Upper limit)/2
Class Width = Upper Limit – Lower Limit = 0.875 – 0.235 = 0.64
24)
For ANOVA Table:
Df Residual = df Total – df Regression
MS Regression = SS Regression / df Regression
MS Residual = SS Residual / df Residual
F = MS Regression/ MS Residual
SS Total = SS Regression + SS Residual
Completed Tables:
For Regression Summary,
R Square = SS Regression / SS Total
Multiple R =  Sqrt(R Square)
Standard Error = Sqrt(MS Residual)
Observations = df Total + 1
Coefficient of determination is 0.271. It means than 27% of the variation in the dependent variable is explained by the independent variable.

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