1. Review for Interim Activity 7 th Grade Accelerated Math Mrs. Tran

2. 1. Which statistic is misleading in the following set of test scores? 2, 85, 87, 88, 89 A.meanB.mode C.medianD.upper quartile 2. A sample should be ______. A.not representative of the general population B.half the size of the population C.less than ten in the general population D.representative of the general population 3. Meng conducted a survey to determine the favorite flavor of ice cream in his hometown. Fifteen of the fifty people he surveyed liked strawberry best. How many of the 3,500 residents in the town would you expect to like strawberry best?

3. 4. 4.. There are 1942 students at West High School. Use the information in the table to determine how many students study less than 2 hours each day. 5. In a survey, 81% of teens said that they use the Internet to send E-mails. Predict how many of the 841,000 teens in Florida use the Internet to send E-mail. 6. What type of display is appropriate to show the value of a house over a period of 20 years?

4. 7. Every Friday, the French Club sells bagels and the Spanish Club sells doughnuts to raise money for charity. The double dot plot shows how many items the clubs sell over several weeks. Which statement is not true? A.The distribution is symmetric for the Spanish Club, but not for the French Club. B.The French Club has a greater mean than the Spanish Club. C.The mean and median are the same for the Spanish Club. D.The Spanish Club has a greater median than the French Club.

5. 8. To determine what students want served in the cafeteria, the cook asks students in Ms. Andrew’s first period class. Describe the sample used by the cook. 9. To determine if a certain assembly line is producing quality radios, an employee checks every thirtieth radio leaving the assembly line. Describe the sample used by the employee. 10. To determine who the voters will chose for governor, five voters picked at random from each county of the state are surveyed. Describe the sample.

6. 11. Two coins are tossed and a number cube is rolled. How many outcomes are possible? 12. A minor-league baseball team had three players tryout for each of the nine positions. How many ways could the team be formed? 13. A restaurant offers 6 appetizers, 4 salads, 8 entrees, and 5 desserts. Find the number of possible meals that include one item from each course. 14. When two coins are flipped, the probability of getting two heads is 1/4. What is the probability of not getting two heads?

7. 15. What is the probability of tossing a coin four times and getting tails each time? 16. A marble bag contains 3 red marbles, 4 gray marbles, 6 white marbles, and 5 black marbles. What is the probability of randomly drawing a red marble and then a gray marble if the first marble is replaced? 17. Which is the best way to simulate choosing one student out of 12 to be the class president? A.roll a dieB.roll a die and flip a coin C.spin a spinner with 4 sections D.flip a coin

8. 18. In a standard deck of 52 cards, what is the probability of drawing one ace after another ace on two draws? 19. What is the probability of tossing a coin four times and getting tails each time? 20. Ten cards numbered 1-10 are placed in a hat. What is the probability of randomly drawing a card with an even number then a card with a number greater than or equal to five if the first card is replaced?

9. 22 21. The Carillo family has a circular swimming pool with a diameter of 15 feet. Find the area of the pool cover to the nearest tenth. Find the area of the shaded region to the nearest tenth.

10. 23. What is the volume of a shoebox that measures 14 inches by 8 inches by 8 inches? 24. 25. Find the circumference of a circle whose diameter is 3.2 meters. Round to the nearest tenth. Find the surface area of the triangular prism.

11. 26. 27. Find the area of the composite figure. Find the area of the composite figure. Round to the nearest hundredth.