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Introduction to Statistics: Homework Help Resource Final Exam

Free Practice Test Instructions:

Choose your answer to the question and click 'Continue' to see how you did. Then click 'Next Question' to answer the next question. When you have completed the free practice test, click 'View Results' to see your results. Good luck!

Question 1 1. What are a sequence of equally distributed variables?

Question 2 2. Using the table below, determine the relative win frequency for the Lions rounded to the closest whole percent.

Question 3 3. James is going through an old bag of marbles. He bets his friends that he can pull a red marble out of the bag and then a yellow marble in one try. There are 12 red marbles and 7 yellow marbles. What is the probability that he can pull a yellow from the bag, given that he has already pulled a red?

Question 4 4.

Find the standard deviation for the following data set:

16, 20, 14, 24, 16, 19, 30, and 8

Question 5 5. There is a bag of blue and red marbles and a deck of cards. What is the type of probability if one wants to know the chances of pulling out a blue marble and then an ace from the deck of cards?

Question 6 6. What is a part of a population used to describe the whole group?

Question 7 7. The probability of selecting a green ball from a bag is 1 out of 8, assuming there are 8 balls in the bag. If you select 3 balls, replacing them each time, what is the probability of at least one of them being green?

Question 8 8. In probability, a/an _____ is an event of a sample space.

Question 9 9. Which axis of a histogram usually shows the categories into which the various members of a data set fall?

Question 10 10. If a data set undergoes a linear transformation with positive values of a and b, why might both the mean and the standard deviation of the data set increase?

Question 11 11.

Use a ruler or a graphing calculator to find the regression line of the following data set:

(2, 3) (4, 6) (5, 1) (2, 4) (1, 3) (6, 3)

Question 12 12.

Find the variance for the following data set:

101, 106, 125, 142, 78, and 109

Question 13 13. The Bar Graph, 'Top Ten U.S Rentals in 1999', shows the top ten movies in the U.S during the year. Which movie had about 150 million in rentals?

Question 14 14.

Jackie is conducting a survey. Her population contains 100 people with strata divided into the following proportions:

20%, 10%, 10%, 30%, 30%

If Jackie wants to select 10 people for her sample, then how many people from each stratum would she pick?

Question 15 15. Twelve employees at a local company decide to go out for lunch. Of the 12 employees, 8 are men and 4 are women. If a woman is the first to order, what is the probability that a man will be the next person to order lunch?

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Introduction to Statistics: Homework Help Resource Final Free Practice Test Instructions

Choose your answer to the question and click 'Continue' to see how you did. Then click 'Next Question' to answer the next question. When you have completed the free practice test, click 'View Results' to see your results. Good luck!

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