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PSYCH 625 Week 5: Time to Practice and Statistics Project

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A+ Grade Solutions

PSYCH 625 Week 5: Time to Practice and Statistics Project

 

Part A

Some questions in Part A require that you access data from Statistics for People Who (ThinkThey) Hate Statistics. This data is available on the student website under the Student Text Resources link.

 

 

Total no. of problems correct (out of a possible 20)

Attitude toward test taking (out of a possible 100)

17

94

13

73

12

59

15

80

16

93

14

85

16

66

16

79

18

77

19

91

 

 

 

+.71

+.36

.45

.47

.62

 

 

Hours of studying

GPA

23

 

12

 

15

 

14

 

16

 

21

 

14

 

11

 

18

 

9

 

 

 

Level of Measurement and Examples

Variable X

Variable Y

Type of correlation

Correlation being computed

Nominal (voting preference, such as Republican or Democrat)

Nominal (gender, such as male or female)

Phi coefficient

The correlation between voting preference and gender

Nominal (social class, such as high, medium, or low)

Ordinal (rank in high school graduating class)

Rank biserial coefficient

The correlation between social class and rank in high school

Nominal (family configuration, such as intact or single parent)

Interval (grade point average)

Point biserial

The correlation between family configuration and grade point average

Ordinal (height converted to rank)

Ordinal (weight converted to rank)

Spearman rank correlation coefficient

The correlation between height and weight

Interval (number of problems solved)

Interval (age in years)

Pearson product-moment correlation coefficient

The correlation between number of problems solved and the age in years

 

 

  1. Statistics for People Who (Think They) Hate Statistics to determine whether the correlations are significant and how you would interpret the results.

 

 

  1. SPSS software.

 

 

 

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

 

 

 

 

  1. 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. Refer to the following data set:

 

Team

Average no. 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

 

 

From Salkind (2011). Copyright 2012 SAGE. All Rights Reserved. Adapted with permission.

 

A+ Grade Solutions PSYCH 625 Week 5: Time to Practice and Statistics Project Part A Some questions in Part A require that you access data from Statistics for People Who (ThinkThey) Hate Statistics. This data is available on the student website
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