Exam 2: Presenting Data in Tables and Charts

Histograms are used for numerical data while bar charts are suitable for categorical data.

Instruction 2-11 The table below contains the opinions of a sample of 200 people broken down by gender about the latest government plan to eliminate restraint of trade exemptions for professional sporting leagues. For Neutral Against Totals Female 38 54 12 104 Male 12 36 48 96 Totals 50 90 60 200 -Referring to Instruction 2-11,________ percent of the 200 were against the plan.

Instruction 2-5 The following are the durations in minutes of a sample of long-distance phone calls made within Australia reported by one long-distance carrier. Relative Time (in Minutes) Frequency 0 but less than 5 0.37 5 but less than 10 0.22 10 but less than 15 0.15 15 but less than 20 0.10 20 but less than 25 0.07 25 but less than 30 0.07 30 or more 0.02 -Referring to Instruction 2-5,if 100 calls were randomly sampled,how many calls lasted 15 minutes or longer?

Apple Computer,Inc.collected information on the age of their customers.The youngest customer was 12 and the oldest was 72.To study the distribution of the age among its customers,it can use a percentage polygon.

A good choice for the number of class groups to use in constructing frequency distribution is to have at least 5 but no more than 15 class groups.

Instruction 2-17 The table below contains the number of people who own a portable DVD player in a sample of 600 broken down by gender. Own a Portable DVD Player Male Female Yes 96 40 No 224 240 -Referring to Instruction 2-17,if the sample is a good representation of the population,we can expect ________ percent of the females in the population will not own a portable DVD.

The percentage distribution cannot be constructed from the frequency distribution directly.

Instruction 2-16 Given below is the stem-and-leaf display representing the amount of detergent used in litres (with leaves in 10ths of litres)in a month by 25 drive-through car wash operations in Auckland. 9|147 10|02238 11|135566777 12|223489 13|02 -Referring to Instruction 2-16 if a relative frequency or percentage distribution for the detergent data is constructed,using "9.0 but less than 9.9 litres" as the first class,________ percent of drive-through car wash operations use at least 10 litres but no more than 13 litres of detergent in a month.

Instruction 2-9 The frequency distribution below represents the rents of 250 randomly selected federally subsidised apartments in Sydney. Rent in \ Frequency 300 but less than 400 113 400 but less than 500 85 500 but less than 600 32 600 but less than 700 16 700 but less than 800 4 -Referring to Instruction 2-9,the class midpoint of the second class is ________.

Instruction 2-17 The table below contains the number of people who own a portable DVD player in a sample of 600 broken down by gender. Own a Portable DVD Player Male Female Yes 96 40 No 224 240 -Referring to Instruction 2-17,________ percent of the 600 were females.

A side-by-side chart is two histograms plotted side-by-side.

Instruction 2-11 The table below contains the opinions of a sample of 200 people broken down by gender about the latest government plan to eliminate restraint of trade exemptions for professional sporting leagues. For Neutral Against Totals Female 38 54 12 104 Male 12 36 48 96 Totals 50 90 60 200 -Referring to Instruction 2-11,if the sample is a good representation of the population,we can expect ________ percent of the males in the population will be against the plan.

Instruction 2-17 The table below contains the number of people who own a portable DVD player in a sample of 600 broken down by gender. Own a Portable DVD Player Male Female Yes 96 40 No 224 240 -Referring to Instruction 2-17,construct a table of row percentages.

Given below is the scatter plot of the number of employees and the total revenue ($millions)of 20 companies from New Zealand.There appears to be a positive relationship between total revenue and the number of employees.

Instruction 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 the Supreme Court of Victoria. Stem Leaves 1 23444 1 7899 2 22223455 2 678889 3 001113 3 5778 4 0234 4 5579 5 1124 5 66 6 15 6 8 Note: 1L means the "low teens" - 10,11,12,13,or 14;1H means the "high teens" - 15,16,17,18,or 19;2L means the "low twenties" - 20,21,22,23,or 24,etc. -Referring to Instruction 2-7,if a frequency distribution with equal sized classes was made from this data,and the first class was "10 but less than 20",the cumulative percentage of the second class would be ________.

Instruction 2-9 The frequency distribution below represents the rents of 250 randomly selected federally subsidised apartments in Sydney. Rent in \ Frequency 300 but less than 400 113 400 but less than 500 85 500 but less than 600 32 600 but less than 700 16 700 but less than 800 4 -Referring to Instruction 2-9,________ apartments rented for at least $400 but less than $600.

Instruction 2-17 The table below contains the number of people who own a portable DVD player in a sample of 600 broken down by gender. Own a Portable DVD Player Male Female Yes 96 40 No 224 240 -Referring to Instruction 2-17,if the sample is a good representation of the population,we can expect ________ percent of the population will own a portable DVD.

Instruction 2-11 The table below contains the opinions of a sample of 200 people broken down by gender about the latest government plan to eliminate restraint of trade exemptions for professional sporting leagues. For Neutral Against Totals Female 38 54 12 104 Male 12 36 48 96 Totals 50 90 60 200 -Referring to Instruction 2-11,________ percent of the 200 were females who were against the plan.

Instruction 2-15 The table below contains the opinions of a sample of 200 people broken down by gender about the latest government plan to eliminate restraint of trade exemptions for professional sporting leagues. For Neutral Against Totals Female 38 54 12 104 Male 12 36 48 96 Totals 50 90 60 200 -Referring to Instruction 2-15,construct a table of row percentages.

Instruction 2-14 The ordered array below resulted from taking a sample of 25 batches of 500 computer chips and determining how many in each batch were defective. Defects 1 2 4 4 5 5 6 7 9 9 12 12 15 17 20 21 23 23 25 26 27 27 28 29 29 -Referring to Instruction 2-14,construct a frequency distribution for the defects data,using "0 but less than 5" as the first class.