Statistics-WEEK 7 – SPSS A study was completed that examined the relationship

WEEK 7 –
SPSS

Enter
your answers in the spaces provided. Save the file using your last name as the
beginning of the file name (e.g., ruf_week7_SPSS) and submit via the Drop Box.
When appropriate, show your work.

1. A study was
completed that examined the relationship between coffee consumption and level
of stress for a group of 50 undergraduates. The correlation was .373, and it
was a two-tailed test, done at the .01 level of significance. First, is the
correlation significant? Second, what’s
wrong with the following statement? “As a result of the data collected in this
study and our rigorous analyses, we have concluded that if you drink less
coffee, you will experience less stress.”

3. Use the following set of data to answer the following
questions.

a.
Compute the correlation between age in months and number of
words known.

b.
Test for the significance of the correlation at the .05 level
of significance.

c.
Go way back and recall what you learned in chapter 5 about
correlation coefficients and interpret this correlation.

Age in Months

Number of Words Known

12

6

15

8

9

4

7

5

18

14

24

18

15

7

16

6

21

12

15

17

4. Monica is
interested in predicting how many 75-year-olds will develop Alzheimer’s disease
and is using as predictors level of education and general physical health
graded on a scale from 1 to 10. But she is interested in using other predictor
variables as well. Answer the following questions.

a.
What criteria should she use in the selection of other
predictors? Why?

b.
Name two other predictors that you think might be related to
the development of Alzheimer’s disease.

c.
With the four predictor variables (level of education and general
physical health, and the two new ones that you name), draw out what the model
of the regression equation would look like.
(Do your best to draw on Word or describe it in detail).

5. Peter was
curious to know if the average number of games won in a year predicts Super
Bowl performance (win or lose). The X variable was the average number of games
won during the past 10 seasons. The Y variable was whether the team ever won
the Super Bowl during the past 10 seasons. Here are the data:

Team

Average Number of Wins
Over 10 Years

Bowl? (1 = yes and 0 =
no)

Savannah Sharks

12

1

Pittsburgh Pelicans

11

0

Williamstown Warriors

15

0

Bennington Bruisers

12

1

Atlanta Angels

13

1

Trenton Terrors

16

0

Virginia Vipers

15

1

Charleston Crooners

9

0

Harrisburg Heathens

8

0

Eaton Energizers

12

1

a.
How would you assess the usefulness of the average number of
wins as a predictor of whether a team ever won a Super Bowl?

b.
What’s the advantage of being able to use a categorical
variable (such as 1 or 0) as a dependent variable?

c.
What other variables might you use to predict the dependent
variable, and why would you choose them?

6. Now for
multiple predictor variables. Take a look at the data below with the outcome
being a great chef. We suspect that variables such as number of years of
experience cooking, level of formal culinary education, and number of different
positions (sous chef, pasta station, etc.) all contribute to rankings or scores
on the Great Chef Test.

Years of Experience

Level of Education

# of Positions

Score on Great Chef Test

5

1

5

88

6

2

4

78

12

3

9

56

21

3

8

88

7

2

5

97

9

1

8

90

13

2

8

79

16

2

9

85

21

2

9

60

11

1

4

89

15

2

7

88

15

3

7

76

1

3

3

78

17

2

6

98

26

2

8

91

11

2

6

88

18

3

7

90

31

3

12

98

27

2

16

88

a.
Which are the best predictors of the Chef’s score?

b.
What can you expect for a score from a person with 12 years
of experience and a Level 2 education, and who has held five positions?

The
deadline for this assignment is 11:59 PM EST on Sunday of Week 7

 

 

Lets Start Working

Plagiarism Free

We use anti-plagiarism software to ensure you get high-quality, unique papers. Besides, our writers have a zero plagiarism mentality

On Time Delivery

Your essay will be delivered strictly within the deadline.  If you have an urgent order, we can do it!

Money Back Guarantee

We offer warranty service, including free revisions, and a right to request a refund incase your expectations are not met!

THE BEST PAPER WRITER HELPER

Our Advantage

  • Say “NO” to plagiarism – FREE plagiarism report as an addition to your paper
  • The lowest prices that fit excellent quality
  • Authorship – you are the one who possesses the paper. We DO NOT re-sale or re-use any of them.

OUR PAPER WRITER HELPER GOODIES

Our Freebies

  • Free Cover Page
  • Free Revisions
  • Free Reference Page
  • Free 24/7 support

Pin It on Pinterest

Share This