3, 4.35, 11, 11.51, 2, 44, 2.64, 18

Transcription

1 Integrated Math Q2- Test 2 Review 1. What is the mean of the following set of numbers? [Round the answer to the hundredths place if needed.] , 4.35, 11, 11.51, 2, 44, 2.64, The graph above shows a line of best fit for data collected on the amount of precipitation cities received in relation to the outside temperature. What is the equation of the line of best fit?

2 3. A line passes through (8,5) and (11,-7). Write the equation of the line in general form. 4x + y = 27 4x - y = 27 4x - y = 12 4x + y = A single six-sided die is rolled twice. What is the probability of rolling an even number on the first roll and an even number on the second roll? 5. A catering service specializes in weddings, holiday parties, and company events. The following bar graph shows the average number of each type of event that they booked each month for the last 5 years. Predict in which of the following months the service will book the most number of weddings. May March September November

3 6. 7. A researcher made the following graph showing the number of hours per week that people exercise versus the amount of money they spend eating out per week. Predict the approximate amount of money someone would spend eating out if they spend 3 hours per week exercising

4 8. Holly is taking a multiple choice reading test. She has decided to guess on questions 3 and 7. On each question, there are four worded choices plus an "all of these" choice and a "none of these" choice. What is the probability that she answers question 3 correctly and question 7 incorrectly? 9. What is the mode of the following set of numbers? 90.6, 59, 41, 90.6, 59, , 59, 124, 41,

5 11. A group of people was surveyed about the amount of soda and water they drink each day. The graph below shows the results of the survey. Based on the graph, which of the following is a valid conclusion? As the number of ounces of water a person drinks decreases, the number of ounces of soda he or she drinks stays the same. As the number of ounces of water a person drinks increases, the number of ounces of soda he or she drinks increases. As the number of ounces of water a person drinks decreases, the number of ounces of soda he or she drinks decreases. As the number of ounces of water a person drinks increases, the number of ounces of soda he or she drinks decreases. 12. A linear function has a slope of and passes through the point (0,-11). What is the equation of the line?

6 13. A linear function has a y-intercept of -5 and a slope of. What is the equation of the line? 14. The following stem-and-leaf plot shows the on-record attendance for regional charity drive meetings. What is the mode of these values? stem leaf What is the range of the data shown in the stem-and-leaf plot above?

7 16. The graph below shows a line of best fit for data collected on the amount remaining on student loans for a group of graduates x years after graduation. Based on the line of best fit, what is the balance on a student loan for a student who graduated 12 years ago? $5,000 $15,000 $12,500 $17, A card is randomly drawn from an ordinary deck of playing cards. What is the probability that the card is a king or a diamond?

8 18. What is the slope of the line that passes through the points (3, -16) and (11, 20)? 19. A line with a slope of 1 passes through (-5,-3). Write the equation of the line in general form. y + 3 = 1(x + 5) x - y = - 2 y = x + 2 x + y = Cordelia used a random number generator to choose a name for her new puppy. Her results are in the table below. Name Number Assigned Frequency Sparky Solomon Lemon Linus Lassie Based on her results, what is the experimental probability that the puppy will be named Lemon or Linus?

9 21. What is the range of the following set of numbers? 31, 24.3, 33.7, 30, 27.3, 29, 26.3, 35.7, What is the equation for a line that passes through the points (-4,-2) and (8,13)? 23. What is the interquartile range of the following data set? 45, 53, 55, 65, 60, 48, Terry is going to purchase one item each from two quarter machines. The first quarter machine contains bracelets that are 4 different colors, including her favorite color, red. There are equal amounts of each color. The second quarter machine contains 1 sticky hand, 1 pencil topper, 2 erasers, 3 plastic rings, and 4 bouncing balls. What is the probability that Terry will get a red bracelet and a plastic ring by putting a quarter in each machine?

10 25. In a bag, there are 12 silver keys, 5 black keys, 10 copper keys, and 4 painted keys of various colors. What is the probability that a key that is drawn is silver or copper? 26. A linear function has a slope of and crosses the y-axis at 11. What is the equation? , 127, 109, 111, 114, 126, 87,91, 105, 102, 112, 121, 94, 95, 116 Which of the box-and-whisker plots below represents the data set above? W. X. Y. Z. Y Z X W

11 28. A company conducted a survey of 6,205 people to find out the fastest speed they have driven in certain cities. Based on the table below, what is the difference between sample's interquartile range and the population's interquartile range? Name Minimum 1 st Quartile 2 nd Quartile 3 rd Quartile Maximum Atlanta Athens Chickamauga Gray Population There is a difference of There is a difference of There is a difference of There is a difference of An 8-sided die was rolled a number of times. The results are shown in the table below. Number Frequency Based on these results, what is the probability of rolling a 1 then a 5?

12 30. The graph above shows a line of best fit for data collected on the saving account balances of several students in relation to the time money has been put into the accounts. What is the equation of the line of best fit? 31. Thomas Wade conducted book signings in several rural towns. The number of people who attended the book signings are represented by the box plot below. Which set of data below represents the minimum and median, in that order? 36, 40 21, 32 25, 36 32, 36

13 32. What is the upper quartile? 50, 45, 44, 55, 56, 71, 39, 66, 45, 61, 55, 29, 45, 55, The graph below shows a line of best fit for data collected on the number of students versus the number of teachers in area schools. Based on the line of best fit, how many teachers are at a school that has 1,350 students? What is the median? 30.7, 29, 23, 29, 24.3, 21.3, 26, 31.7,

14 The manager of a car lot made the given circle graph to track the number of each type of vehicle sold for the previous year. Use the graph to predict the category from which the lot should experience the least number of sales. Hybrid SUV Van Truck