Exam 2: Organizing and Visualizing

It is essential that each class grouping or interval in a frequency distribution be ________ and ________.

SCENARIO 2-19-A You are the quality control manager of a water bottles company. One of the biggest complaints in the past years has been the breakage and, hence, the concern on the durability of the connector between the lid and the bottle which many users use as a handle for the bottles. To collect evidence before implementing any modification to the production process, your department has subjected 50 water bottles to a durability test and the following data on the number of times the handles have been used to lift the bottles before they break are contained in the file Scenario2-19-DataA.XLSX. 495 499 502 500 491 498 498 495 488 516 513 486 504 503 493 504 489 500 495 499 501 507 511 496 486 497 510 504 493 482 511 502 520 514 486 514 500 505 512 500 504 498 503 514 474 489 488 506 517 490 -Referring to Scenario 2-19-A, construct a histogram using "473 but less than 480" as the first class.

SCENARIO 2-18 The stem-and-leaf display below shows the result of a survey on 50 students on their satisfaction with their school with the higher scores represent higher level of satisfaction. -Referring to Scenario 2-18, what was the highest level of satisfaction?

SCENARIO 2-20-B A recent consumer survey on holiday shopping reveals the following information on the types of stores at which consumers plan to shop (The table is also available in the file Scenario2-20- DataB.xlsx: Types of Stores \% of Customers Stand-alone "big box" stores 54 Traditional mall 61 Local independent stores not in a mall 35 Strip mall or mini mall 25 Town hall mall 14 I do not plan to shop at any of these 9 -Referring to Scenario 20-20-B, the top 2 categories of stores that customers plan to shop at make up ____% of the 6 categories of shopping preferences.

SCENARIO 2-19-B You are the quality control manager of a water bottles company. One of the biggest complaints in the past years has been the breakage and, hence, the concern on the durability of the connector between the lid and the bottle which many users use as a handle for the bottles. To collect evidence before implementing any modification to the production process, your department has subjected 50 water bottles to a durability test and the following data on the number of times the handles have been used to lift the bottles before they break are contained in the file Scenario2-19-DataB.XLSX. 493 506 515 491 500 505 517 510 506 503 503 491 495 496 496 505 493 486 504 483 514 494 497 501 493 490 510 494 494 495 494 486 495 506 506 507 502 498 510 501 500 505 492 486 501 496 501 521 510 498 -Referring to Scenario 2-19-B, if a percentage histogram was constructed using "473 but less than 480" as the first class, the percentage of bottles with handles that broke after being used for lifting at least 494 but less than 501 times would be ________.

SCENARIO 2-12 The table below contains the opinions of a sample of 200 people broken down by gender about the latest congressional plan to eliminate anti-trust exemptions for professional baseball. For Neutral Against Totals Female 38 54 12 104 Male 12 36 48 96 Totals 50 90 60 200 -Referring to Scenario 2-12, construct a table of total percentages.

SCENARIO 2-7 The Stem-and-Leaf display below contains data on the number of months between the date a civil suit is filed and when the case is actually adjudicated for 50 cases heard in superior court. S Stem Leaves 1 234447899 2 22223455678889 3 0011135778 4 02345579 5 112466 6 158 -Referring to Scenario 2-7, locate the first leaf, i.e., the lowest valued leaf with the lowest valued stem. This represents a wait of ________ months.

SCENARIO 2-20-B A recent consumer survey on holiday shopping reveals the following information on the types of stores at which consumers plan to shop (The table is also available in the file Scenario2-20- DataB.xlsx: Types of Stores \% of Customers Stand-alone "big box" stores 54 Traditional mall 61 Local independent stores not in a mall 35 Strip mall or mini mall 25 Town hall mall 14 I do not plan to shop at any of these 9 -Referring to Scenario 20-20-B, ____ % of the customers surveyed mentioned that they did not plan to shop at any of these stores.

SCENARIO 2-9 The frequency distribution below represents the rents of 250 randomly selected federally subsidized apartments in a small town. Rent in \ Frequency 1,100 but less than 1,200 113 1,200 but less than 1,300 85 1,300 but less than 1,400 32 1,400 but less than 1,500 16 1,500 but less than 1,600 4 -Referring to Scenario 2-9, ________ percent of the apartments rented for at least $1,300.

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. Own a Portable Blu-ray player Male Female Yes 96 40 No 224 240 -Referring to Scenario 2-14, ________ percent of the 600 were females who either owned or did not own a portable Blu-ray player.

SCENARIO 2-13 Given below is the stem-and-leaf display representing the amount of detergent used in gallons (with leaves in 10ths of gallons) in a day by 25 drive-through car wash operations in Phoenix. 9\mid147 10\mid02238 11\mid135566777 12\mid223489 13\mid02 -Referring to Scenario 2-13, construct a cumulative percentage distribution for the detergent data if the corresponding frequency distribution uses "9.0 but less than 10.0" as the first class.

SCENARIO 2-6 A sample of 200 students at a Big-Ten university was taken after the midterm to ask them whether they went bar hopping the weekend before the midterm or spent the weekend studying, and whether they did well or poorly on the midterm. The following table contains the result. Did Well in Midterm Did Poorly in Midterm Studying for Exam 80 20 Went Bar Hopping 30 70 -Referring to Scenario 2-6, _______ percent of the students in the sample went bar hopping the weekend before the midterm and did well on the midterm.

SCENARIO 2-10 The histogram below represents scores achieved by 200 job applicants on a personality profile. -Referring to the histogram from Scenario 2-10, _______ percent of the applicants scored between 20 and below 50.

SCENARIO 2-14 The table below contains the number of people who own a portable Blu-ray player in a sample of 600 broken down by gender. Own a Portable Blu-ray player Male Female Yes 96 40 No 224 240 -Referring to Scenario 2-14, construct a table of total percentages.

Given below is the scatter plot of the price/earnings ratio versus earnings per share of 20 U.S. companies. There appears to be a negative relationship between price/earnings ratio and earnings per share.

SCENARIO 2-19-B You are the quality control manager of a water bottles company. One of the biggest complaints in the past years has been the breakage and, hence, the concern on the durability of the connector between the lid and the bottle which many users use as a handle for the bottles. To collect evidence before implementing any modification to the production process, your department has subjected 50 water bottles to a durability test and the following data on the number of times the handles have been used to lift the bottles before they break are contained in the file Scenario2-19-DataB.XLSX. 493 506 515 491 500 505 517 510 506 503 503 491 495 496 496 505 493 486 504 483 514 494 497 501 493 490 510 494 494 495 494 486 495 506 506 507 502 498 510 501 500 505 492 486 501 496 501 521 510 498 -Referring to Scenario 2-19-B, based on the cumulative percentage polygon or cumulative percentage distribution constructed using "480 but less than 487" as the first class, the percentage of bottles with handles that broke after being used for lifting at least 487 times would be ________.