Chapter 2 Stem & Leaf and Histograms Jonathan Hill The stem-and-leaf plot above shows house sale prices over the last week in Oxnard. Stem (hundred thousands) Leaf (ten thousands) Question 1 1/1 pt 99 224667889 This stem and leaf plot shows the height of several trees. 01 1223445667889 1344566678899 Height in Feet and Inches of Several Trees 001122344566688 5 3 6 1,2,2,4,5,6,11 what was the less expensive house sold in 200,000 range? Give your answer in dollars 8 5 Question Help: Message instructor what is the number of trees that are LESS than 6 feet tall? Question 4 Cort pt 3 99 Question Help: Message instructor Here is a data set summarized as a stem-and-leaf plot: 03445678 Question 2 0/1 pt ( 3 0 99 0002244456667777 01338 Home Sales Prices 069 (hundred thousands) (ten thousands) How many data values are in this data set? n = 667778959 02447778089999 What is the minimum value in the last row of the stem plot? 001 1234445667889 00011225 what is the minimum value in the entire sample? The stem-and-leaf plot above shows house sale prices over the last week in Tacoma. What was the most expensive house sold? Give your answer in dollars How many of the original values are greater than 60? Question Help: Video ) Message instructor Question Help: Message instructor Question 5 o/1 pt 9 3 99 Question 3 Go/pt 3 2 95 The following stem-and-leaf plots compare the ages of 30 actors and 30 actresses at the time they won the Oscar award for Best Actor or Actress. Here is a data set: 77 73 62 85 61 Actors Actresses 72 86 80 75 79 146667 62 75 84 77 6 98753221 001 13344455778 77 62 66 94 73 88776543322100 4 11129 78 97 78 83 98 6651 77 60 71 71 65 210 6 011 You are examining the data with a stem-and-leaf plot. Here is the start of the plot. Finish the plot. 6# | 01222456 1 11233557777885 (a) what is the age of the youngest actor to win an Oscar? Question Help: Message instructor years . Question 8 Corpt 5 3 99 (b) what is the age difference between the oldest and the youngest actress to win an Oscar? years (c) what is the oldest age shared by two actors to win an Oscar? Frequency A years Based on the histogram above, what is the frequency of Question Help: (Message instructor Question 6 Go/1 pt 9 3 99 6 11 16 21 26 31 data the class containing the value 2 Here is a data set: 73 96 78 85 69 92 73 78 64 84 85 72 73 76 7 Question Help: Message instructor 60 72 85 75 70 . Question 9 Go/1 pt 0 3 99 94 67 72 64 65 68 71 85 76 61 You are examining the data with a stem-and-leaf plot. Here is the start of the plot. Finish the plot. 1 01445789 7# | 01222333566788 8# 1 45655 Question Help: video Message instructor Question 7holding the shuts the express lane clerk recorded how many times customers violated the "10 iten less" rule for his lane. In particular, he recorded how many items over the limit each violator placed on jesse shift, the express lane clerk recorded how many times customers violated the 10 wins less" rule for his lane. In particular, he recorded how many items over the limit each violator placed on the conveyor belt. This data is summarized in the histogram below. NOTE: The last class actually the conveyor belt. This data is summarized in the histogram below. NOTE: The last class actually represents "7 or more items," not just 7 items. represents "7 or more items," not just 7 items. Frequency Frequency 0.5 15 2.5 3.5 45 3.5 65 75 +0.5 15 25 3.5 4.5 5.5 6.5 7.5 # items over 10 # items over 10 what is the frequency of times the limit was exceeded by less than 5 items? what is the frequency of times the limit was exceeded by 2 items? Answer: times Answer: times Question Help: video 1 @ video 2 ) Message instructor Question Help: video 1 @ video 2 ) Message instructor Question 10 Go/1 pt 5 3 99 . Question 12 Go/1 pt () 3 0 99 restaurant recorded how many tacos were included in each order. This data is summarized in the histogram below. (Note: The last class actually represents "7 or more tacos," not just 7 tacos.) Frequent number of tacos what is the frequency of times an order included at least 3 tacos? ans = Question Help: Message instructor . Question 11 (o/1 pt () 3 2 99 According to the histogram, what percentage of semi-professional soccer players in the sample have heights less than 66 inches? 10+ Heights of Semi-professional Soccer Players Frequency 9 13 17 21 25 Frequency Based on the histogram above, what is the bin width? Bin width = How many individuals are represented in the histogram? [60,63) [63.65) [G6.69) [69,72) [72,75] Sample size = Height (in) Question Help: Message instructor 92 Question 14 0/1 pt 3 99 O 24 10+ Frequency 100 Question Help: ) Message instructor . Question 13 Go/1 pt () 3 99 data 13 16 19 Based on the histogram above, what is the class width? class width = what is the sample size? Sample size = Question Help: Message instructor Question 15 Go/1 pt () 3 99