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A study was conducted to determine if the number of hours spent studying for an exam...

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Question

Statistics

A study was conducted to determine if the number of hours spentstudying for an exam is associated with the exam score. Thefollowing are the observations obtained from a random sample of 5students:

Number of Hours Spent Studying (X)

8

2

6

4

2

Exam Score (Y)

98

74

87

82

72

The average number of hours spent studying for an exam is_____.

Part A:

A)

82.6

B)

22

C)

4.4

D)

413

The average exam score is _____.

Part B:

A)

85.0

B)

4.4

C)

82.6

D)

78.3

The sum of squared differences of the number of hours spentstudying from its mean (SSx) is _____.

Part C:

A)

2.6077

B)

10.5262

C)

443.2

D)

27.2

The sum of squared differences of the exam score from its mean(SSy) is _____.

Part D:

A)

10.5262

B)

27.2

C)

2.6077

D)

443.2

The standard deviation of the number of hours spent studying is_____.

Part E:

A)

2.6077

B)

443.2

C)

10.5262

D)

27.2

The standard deviation of exam scores is _____.

Part F:

A)

27.2

B)

2.6077

C)

10.5262

D)

443.2

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