QUESTION 1 Statistics Endeavors to: Choose one • 10 points ·         Determine trends ·         Make correlations ·         Make forecasts ·         All of the above QUESTION 2 We collected a sample...

QUESTION 1

Statistics Endeavors to:

Choose one • 10 points

·         Determine trends

·         Make correlations

·         Make forecasts

·         All of the above

QUESTION 2

We collected a sample of the prices of new homes. The mean of our sample is $255,000, with a standard deviation of $19,000. Calculate the z-scores of each of the given prices. Determine if the they are usual or unusual. Round up each z-score to two decimals.

(a) $275, 000

(b) $230,000

(c) $210,000

(d) $290,000

Choose one • 10 points

·

o    -1.05, unusual

o    1.23, unusual

o    2.37, usual

o    -1.84, unusual

·

o    1.05, usual

o    -1.32, usual

o    -2.37, unusual

o    1.84, usual

·

o    1.05, usual

o    -1.23, usual

o    -2.37, usual

o    1.84, usual

·

o    -1.05, usual

o    -1.23, usual

o    -2.37, unusual

o    1.84, usual

QUESTION 3

A college student took 4 courses last semester. His final grades, along with the credits each class is worth, are as follow: A (4), B (3), F (3), A (2) and D (1). The grading system assigns quality points as follows: A: 4; B: 3; C: 2; D: 1; and F: 0. Find the student’s GPA for this semester. Round your answer to the nearest thousandth (three decimals).

Choose one • 10 points

·         2.845 GPA

·         3.010 GPA

·         2.615 GPA

·         3.100 GPA

QUESTION 4

An investing firm wants to diversify their portfolio and is considering purchasing stock in a recording company. For the past 4 months, the company has experienced increases in its revenue growth rate as follows: 1.5%, 2.3%, 1.7% and -1.3%. What is the average rate of revenue growth? Round your answer to four decimals.

Choose one • 10 points

·         0.0104

·         0.0105

·         0.0103

·         0.0106