Probability and Statistics Released SOLs

How many of the sections of the spinner shown below should be colored blue in order to make the probability of the arrow landing on blue 0.375 in a single spin?(SOL 8.11) 1 3 5 7 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Dave is a member of a bowling league Dave is a member of a bowling league. The table below shows his record for the last 10 games (100 frames) he bowled. Based on his previous record, what is the probability that Dave will bowl a strike in the next frame? (8.12) 3/100 3/50 3/25 6/25 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

Each year the church youth group has a car wash and donates the earnings to the food pantry. Which amount is closest to the mean earnings over this period? (SOL 8.12) $300 $500 $700 $800 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

The graph shows the annual sales for the Gambit Novelty Company since 1975. Which is the best prediction for sales in the year 2005? (SOL 8.12) $375,000 $400,000 $425,000 $450,000 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32

2004 In a bag of candies there are 13 red candies, 13 green candies, 13 yellow candies, and 13 blue candies. If you choose 1 candy from the bag, what is the probability the candy will not be blue? (8.11) ¼ ½ 2/3 ¾ 1 2 3 4 5

2004 The list shows the scores made by each member of Jaime’s discussion group on the last test. 71 80 62 93 68 87 73 78 Which stem-and-leaf plot correctly displays the information? (8.12) B. A. A B C D C. D. 1 2 3 4 5

2004 What was the daily average (mean) number of lunches sold during the week? (8.12) 225 250 270 290 1 2 3 4 5

2004 Which scattergram shows the relationship between the amount of gasoline in an automobile’s tank and the distance traveled since the last fill-up? (8.12) A. B. A B C D C. D. 1 2 3 4 5

2004 Nicole listed her homework scores from her mathematics class. 100, 97, 95, 80, 88, 84, 96, 60, 78, 83 Which box-and-whisker plot correctly displays the information? (8.12) A. A B C D B. C. D. 1 2 3 4 5

2004 This shows all the different ways a pair of number cubes can land in a game Robbie is playing. To win on his next turn, he needs to roll an 8. What is the probability that Robbie will win on his next turn? (8.11) 5/36 4/72 3/36 5/35 1 2 3 4 5

2004 According to the data in the graph, which would be the most reasonable prediction for the percent of households with CD-ROMs in their computers in 1998? (8.12) 24% 36% 40% 44% 1 2 3 4 5

2004 The spinner below is used in a game. In a single spin, what is the probability of the arrow landing on a Green or Blue space? (8.11) ⅛ ¼ ½ ⅝ 1 2 3 4 5

2004 Sam listed his scores from history class. 84, 86, 83, 78, 92, 87, 92, 90, 88, 86 Which line plot correctly displays his scores? (8.12) A. B. A B C D C. D. 1 2 3 4 5

Which matrix has a 2 and a 5 in the same column? (8.13) 2007 Which matrix has a 2 and a 5 in the same column? (8.13) A B C D D. A. B. C. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

2007 During basketball practice, Jada attempted 52 free throws and made 16 of them. Based on that rate, what is the probability that she will make the next free throw she attempts? (8.11) A B C D 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

2007 Rocky has a 3/140 chance of winning a trip to New York City. Which of the following best describes Rocky’s chances of winning the trip? (8.11) It is certain that Rocky will win the trip. It is likely that Rocky will win the trip. It is unlikely that Rocky will win the trip. It is impossible that Rocky will win the trip. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Which is a 2-by-6 matrix? (8.13) 2007 Which is a 2-by-6 matrix? (8.13) A. B. A B C D C. D. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Sandra has a bag of same-sized cookies Sandra has a bag of same-sized cookies. The number of cookies and the different animal pictures on the cookies are listed below. Sandra will choose one cookie at random. What is the probability that the first cookie Sandra chooses will have a picture of a tiger? 3/26 3/23 1/4 1/3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

How many rows does this matrix have? 3 4 7 12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

A spinner consists of six equal regions as shown A spinner consists of six equal regions as shown. If Harrold spins the spinner once, what is the probability that the arrow will land on a region numbered less than or equal to 2 ? 1/6 1/3 1/2 2/3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

The line graph shows the heights of water in a container that Manny recorded over a 5-hour period for a science project. If the height of the water continues to decrease as shown, which is closest to its height at 6:00 p.m.? 3.00 cm 2.75 cm 1.50 cm 0.25 cm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

The bar graph shows the number of absences for several students in Mr The bar graph shows the number of absences for several students in Mr. Hide’s class. What is the mode number of absences for this group of students? 13 10 4 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

A store manager displayed the number of bottles of suntan lotion sold during several months in this bar graph. What percent of the total number of bottles of suntan lotion sold in June, July, and August was sold in July? 30% 32% 40% 48% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

A bag contains 12 marbles: 5 are orange, 3 are blue, and the rest are red. If one marble is selected at random from the bag, what is the probability that it will be red or blue? 1/4 1/3 5/12 7/12 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30