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Rutgers University PSYCHOLOGY 01:830:123 Quiz 3 1)Lenovo uses the ZX-81 chip in some of its laptop computers

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6. Attendance at Orlando's newest Disneylike attraction, Lego World, has been as follows:

 

 

 

 

Quarter                    Guests                    Quarter                    Guests

 

 

 

 

 

 

 

 

 

 

(in thousands)   (in thousands) Winter Year 1 63 Summer Year 2 124 Spring Year 1 99 Fall Year 2 52 Summer Year 1 149 Winter Year 3 99 Fall Year 1 75 Spring Year 3 161 Winter Year 2 64 Summer Year 3 210 Spring Year 2 83 Fall Year 3 97

Based on the given attendance, the seasonal indices for each of the seasons are

 

 

 

 

 

7. Dr. Lillian Fok, a New Orleans psychologist, specializes in treating patients who are agoraphobic (i.e., afraid to leave their homes). The following table indicates how many patients Dr. Fok has seen each year for the past 10 years.

 

 

 

 

Year                                       1      2       3       4       5       6       7       8       9      10

 

Number of Patients 37 34 39 41 42 54 58 53 58 61

 

 

The simple linear regression equation that shows the best relationship between the number of patients and year is

 

Using linear regression, the number of patients Dr. Fok will see in year 11 =

patients Using linear regression, the number of patients Dr. Fok will see in year 12 =

 

 

 

 

8. Calculate (a) MAD and (b) MSE for the following forecast versus actual sales figures:

 

 

Forecast 100	110	120	130
Actual           95	108	123	130

 

1. MAD =
2. MSE =