Question

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

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 spent studying 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

Answer 1