Practice Problem ANSWERS: ANOR

Item 1

Calculate an Analysis of Regression on the following data, where Reading is predicting Education:

Reading     Education 
    15                 11 
      7                  8 
      2                  5 
      9                  4 
      4                  4 
    11                  9

 

What is the Pearson r:   .78

Perform the following calculations:

                            SS           df        ms

Regression         26.04         1      26.04

Error                  16.80         4        4.20

TOTAL              42.84         5        8.57

 

What is the F for this test:   6.20

 

 

Item 2

Calculate an Analysis of Regression on the following data, where TV watching predicts Violence:

Television       Violence 
    2                       7 
    4                     14 
    8                     12 
  13                       8 
  16                       5 
  19                       2

 

Perform the following calculations:

                             SS           df     ms

Regression         50.86          1     50.86

Error                  47.14          4     11.78

TOTAL             98.00          5     19.60

 

What is the F for this test:   4.32

 

 

Item 3

To discover if TV watching has a significant impact on people’s shyness, use the following information, perform an Analysis of Regression and complete the following summary table:

r= .88

SSx = 50

SSy = 74

N = 12

 

                        SS        df        ms

Regression       57.31     1       57.31

Error                16.69   10        1.67

Total                74        11        6.73

                                   

                        F =       34.33

Is the critical value for F:   4.96

Is the F significant?  Yes

 

 

Item 4

To discover if learning statistics has a significant impact on people’s friendliness, use the following information, perform an Analysis of Regression and complete the following summary table:

r= .32

SSx = 30

SSy = 66

N = 15

 

                         SS        df        ms

Regression         6.76      1         6.76

Error                59.24    13        4.56

Total                66         14        4.71

                                   

                        F =       1.48

What is the critical value for F:   4.67

Is the F significant?  No

 

 

 

NOW YOU CHOOSE:
    Day 7: Probability
    Bit More About Probability
    Even More About Probability
    Even More About ANOR
    Calculate ANOR
    Practice Problems
    More Practice Problems
    Word Problems
        Sim1       Sim2        Sim3
    Basic Facts About Probability
    Vocabulary
    Formulas
    Quiz 7
    Summary