1. Odie Company manufactures a popular brand of cat repellant known as Cat-B-Gone, which it sells in gallon-size bottles with a spray attachment. The majority of Odie's business comes from orders placed by homeowners who are trying to keep neighborhood cats out of their yards. Odie's operating information for the first six months of the year follows:
Required:
Sigrid's Custom Graphics specializes in creating and painting store window advertisement displays. The majority of its business comes from local retailers and fast-food restaurants.
A portion of Sigrid's operating information for the past year follows:
X | Y | 1399+6.34*X | |||||||||
Month | Number of Bottles Sold | Operating Cost | Projected Operation Cost | ||||||||
January | 1,000 | $8,000 | $7,739 | ||||||||
February | 1,100 | $7,700 | $8,373 | ||||||||
March | 1,300 | $9,900 | $9,641 | ||||||||
April | 2,000 | $14,000 | $14,079 | ||||||||
May | 2,400 | $17,250 | $16,615 | ||||||||
June | 3,000 | $20,000 | $20,419 | ||||||||
HIGH AND LOWMETHOD: | |||||||||||
Y =a +bX | |||||||||||
LOW: X1=1000, Y1=8000 | |||||||||||
HIGH: X2=3000, Y2=20000 | |||||||||||
8000=a+b*1000………Equation(1) | |||||||||||
20000=a+b*3000…… Equation (2) | |||||||||||
Multiplying Equation (1) by 3 | |||||||||||
24000=3a+b*3000……….Equation(3) | |||||||||||
Subtracting Equation (2) from equation(3) | |||||||||||
4000=2a | |||||||||||
a=4000/2=2000 | |||||||||||
8000=a+b*1000………Equation(1) | |||||||||||
8000=2000+b*1000 | |||||||||||
b=6000/1000=6 | |||||||||||
LEAST SQUARE REGRESSION ANALYSIS | |||||||||||
Click on Data | |||||||||||
Click on Analysis | |||||||||||
Select Regression and click"Ok" | |||||||||||
Input Y range | |||||||||||
Input X range | |||||||||||
ClickOk | |||||||||||
Output is given below | |||||||||||
SUMMARY OUTPUT | |||||||||||
Regression Statistics | |||||||||||
Multiple R | 0.995496641 | ||||||||||
R Square | 0.991013563 | ||||||||||
Adjusted R Square | 0.988766954 | ||||||||||
Standard Error | 541.5505928 | ||||||||||
Observations | 6 | ||||||||||
ANOVA | |||||||||||
df | SS | MS | F | Significance F | |||||||
Regression | 1 | 129368975 | 129368975.2 | 441.1152 | 3.04E-05 | ||||||
Residual | 4 | 1173108.2 | 293277.0445 | ||||||||
Total | 5 | 130542083 | |||||||||
Coefficients | Standard Error | t Stat | P-value | Lower 95% | Upper 95% | Lower 95.0% | Upper 95.0% | ||||
Intercept | 1399.016563 | 586.4965 | 2.385379205 | 0.075546 | -229.359 | 3027.392 | -229.359 | 3027.392 | |||
X Variable 1 | 6.338509317 | 0.3017943 | 21.00274373 | 3.04E-05 | 5.500594 | 7.176425 | 5.500594 | 7.176425 | |||
a=Intercept | 1399.0165631 | ||||||||||
b= X variable 1 | 6.338509317 | ||||||||||
Y=1399+6.34X | |||||||||||
R square=0.991013563 | |||||||||||
This means 99% data are explained by this equation | |||||||||||
1. Odie Company manufactures a popular brand of cat repellant known as Cat-B-Gone, which it sells...
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Garfield Company manufactures a popular brand of dog repellant known as DogGone It, which it sells in gallon-size bottles with a spray attachment. The majority of Garfield's business comes from orders placed by homeowners who are trying to keep neighborhood dogs out of their yards. Garfield's operating information for the first six months of the year follows: Month January February March April May June Number of Bottles Sold 1,060 1,460 1,850 2,420 3,420 3,800 Operating Cost $10,770 15,670 15,920 19,540...
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