Exam 2: Organising and Visualising Data

Instruction 2.10 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 Netural Ageinst Totals Female 38 54 12 104 Male 12 39 48 96 Totals 50 60 200 -Referring to Instruction 2.10,_________% of the 200 were males who were not against the plan.

Often,the improper use of the vertical and horizontal axes is what leads to distortions in presenting data.

Instruction 2.8 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. Stem Leaves 9 147 10 02238 11 135566777 12 223489 13 02 -Referring to Instruction 2.8,construct a cumulative percentage polygon for the detergent data if the corresponding frequency distribution uses '9.0 but less than 9.9' as the first class.

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

Instruction 2.7 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. Defeds 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 2.7,if a frequency distribution for the defects data is constructed,using '0 but less than 5' as the first class,the relative frequency of the '15 but less than 20' class would be _________.

Instruction 2.11 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 Fermale Yes 96 40 No 224 240 -Referring to Instruction 2.11,_________ % of the 600 were females who either owned or did not own a portable DVD.

Instruction 2.4 The following are the durations in minutes of a sample of long-distance phone calls made within Australia reported by one long-distance carrier. Time (in Minutes) Relative 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 2.4,what is the cumulative relative frequency for the percentage of calls that lasted under 20 minutes?

One of the developing countries is experiencing a baby boom,with the number of births rising for the fifth year in a row,according to an SBS News report.Which of the following is best for displaying this data?

The sum of relative frequencies in a distribution always equals 1.

When constructing a frequency distribution,classes should be selected in such a way that they are of equal width.

A polygon can be constructed from a bar chart.

Instruction 2.10 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 Netural Ageinst Totals Female 38 54 12 104 Male 12 39 48 96 Totals 50 60 200 -Referring to Instruction 2.10,of the females in the sample,_________ % were against the plan.

Instruction 2.10 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 Netural Ageinst Totals Female 38 54 12 104 Male 12 39 48 96 Totals 50 60 200 -Referring to Instruction 2.10,_________% of the 200 were males who were neutral.

Instruction 2.9 A sample of 200 students at a large university was taken after the final exam to ask them whether they went out on the weekend before the exam or spent the weekend studying, and whether they did well or poorly on the exam. The following table contains the result. Did Well on Exam Did Poorly on Exam Studying for Exam 80 20 Went out on the weekend 30 70 -Referring to Instruction 2.9,_________ %t of the students in the sample spent the weekend studying and did well on the exam.

_________helps users to visualize two variables,one of which must be categorical.

Instruction 2.10 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 Netural Ageinst Totals Female 38 54 12 104 Male 12 39 48 96 Totals 50 60 200 -Referring to Instruction 2.10,of those neutral in the sample,_________% were males.

In a survey,150 executives were asked what they think is the most common mistake candidates make during job interviews.Six different mistakes were given.Which of the following is the best for presenting the information?

Instruction 2.5 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 2222345 5 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 2.5,the civil suit with the longest wait between when the suit was filed and when it was adjudicated had a wait of _________months.

Instruction 2.6 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 2.6,the class mid-point of the second class is_________.

Instruction 2.10 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 Netural Ageinst Totals Female 38 54 12 104 Male 12 39 48 96 Totals 50 60 200 -Referring to Instruction 2.10,construct a table of row percentages.